0–9
301 Redirect
A 301 redirect is the HTTP status code that says a URL has moved permanently — passing essentially all of the original page's link equity to the new URL.
SEO302 Redirect
A 302 redirect tells engines that a URL is temporarily redirected — search engines keep indexing the original URL rather than transferring signals to the destination.
SEO307 Redirect
A 307 redirect is the HTTP/1.1 temporary redirect — unlike 302, it preserves the original request method (GET, POST, etc.) instead of silently switching to GET.
SEO308 Redirect
A 308 redirect is the modern permanent redirect — same long-term meaning as 301, but it preserves the original request method instead of forcing GET.
SEO404 Error
A 404 error is the HTTP response signalling that the requested URL does not exist — affecting both user experience and crawl efficiency.
SEO410 Gone
410 Gone is the HTTP status that tells crawlers a page has been permanently removed — clearer than 404, because it explicitly says the page is not coming back.
SEO
A
A/B Testing
A/B testing randomly splits users between two variants and uses statistical comparison to decide which version performs better on a defined metric.
MarketingA2A
A2A (Agent-to-Agent Protocol) is the agent-to-agent standard Google launched and donated to the Linux Foundation in mid-2025, letting agents from different vendors delegate work to each other and exchange results.
AI AgentAARRR
AARRR — Acquisition, Activation, Retention, Referral, Revenue — is the five-stage growth metrics framework popularised by Dave McClure and used as the default scaffolding for growth teams.
MarketingABM
Account-based marketing (ABM) flips B2B from 'lead by lead' to 'account by account', concentrating marketing and sales effort on a defined list of high-value target companies.
MarketingActivation Rate
Activation rate is the share of new signups who reach a defined 'first value' moment shortly after joining — the cleanest read on onboarding quality.
MarketingAEO
AEO (Answer Engine Optimization) is the practice of making sure your brand is cited inside AI-generated answers shown by answer engines such as Google AI Overviews, ChatGPT and Perplexity.
GEO·AEOAffiliate Marketing
Affiliate marketing is the performance model where external partners promote your product and earn a commission on the sales they drive.
MarketingAgent Autonomy Level
Agent autonomy level describes how far an agent acts on its own without human intervention — usually in stages, much like the autonomous driving levels people are already familiar with.
AI AgentAgent Evaluation
Agent evaluation is the test and metric framework for measuring how accurately and safely an agent completes its goals — distinct from plain LLM benchmarking.
AI AgentAgent Hijacking
Agent hijacking is the attack where malicious instructions hidden inside external data or tool outputs take over an agent's decision-making — the headline security threat for autonomous agents.
AI AgentAgent Memory
Agent memory is the storage and retrieval layer that lets an agent remember past conversations and task results, and reuse them in future steps.
AI AgentAgent Protocol
Agent Protocol is an umbrella term for the standards that let agents talk to each other — or to other systems — in a consistent way, covering attempts like A2A, ACP and AP.
AI AgentAgent Skills
Agent Skills are bundled capability packages that let an agent do a specific job well — Anthropic's Skills feature is the canonical example.
AI AgentAgentic AI
Agentic AI is the umbrella term for systems where AI does not just answer questions but actually decides, acts and follows through on multi-step tasks.
AI AgentAgentic Commerce
Agentic commerce is the emerging model in which AI agents handle the entire shopping flow — search, compare, decide, pay — on behalf of the user.
AI AgentAgentic RAG
Agentic RAG is a pattern where an agent actively decides what to search, how to search and when to retry — instead of running a single, fixed retrieval step.
AI AgentAgentic Search
Agentic search is the paradigm where an AI agent runs multiple searches and tool calls on the user's behalf, then synthesises a single answer.
AI AgentAgentic Web
Agentic Web is the term for a web in which AI agents — not humans — are the primary actors browsing, parsing and acting on sites. It became part of the industry vocabulary through 2024 and 2025.
AI AgentAI Agent
An AI agent is an LLM-driven system that takes a goal, plans the steps, calls the tools it needs and runs the task end-to-end with limited human input.
AI AgentAI Alignment
AI alignment is the field — and the practical work — of making AI systems behave in line with human intent, values and safety constraints.
LLMAI Brand Monitoring
AI Brand Monitoring is the ongoing practice of tracking how your brand appears and is described inside AI answers — combining citation, context and factual accuracy checks.
GEO·AEOAI Citation
AI Citation is the event of your domain or content being credited as a source inside an AI answer — the atomic unit of measurement in GEO.
GEO·AEOAI Content Detection
AI Content Detection is the family of techniques that estimate whether text was produced by an AI — relevant to GEO operators on the quality control and policy compliance side.
GEO·AEOAI Content Generation
AI Content Generation is the umbrella for producing text, images and summaries with AI — typically combined with human editing inside a GEO content workflow.
GEO·AEOAI Crawler
AI Crawler is the umbrella term for web crawlers operated for AI model training or AI-search answer generation — GPTBot, ClaudeBot and Google-Extended are the canonical examples.
GEO·AEOAI Crawling
AI Crawling refers to the act of AI training or answer-generation bots traversing the web — distinct from classic search crawling in both policy expectations and load profile.
GEO·AEOAI Overview
Google AI Overviews is the AI-generated summary that appears above the standard results in Google Search — one of the most prominent zero-click surfaces today.
GEO·AEOAI Referral Traffic
AI Referral Traffic is the visit traffic flowing to your site from AI search surfaces — ChatGPT, Perplexity, AI Overviews and similar.
GEO·AEOAI Search
AI Search is the umbrella term for any search experience where an LLM writes the answer directly — covering AI Overviews, ChatGPT Search, Perplexity and the rest.
GEO·AEOAI Sentiment
AI Sentiment captures the tone — positive, neutral, negative — of the passages where your brand appears inside AI answers, used to adjust raw citation numbers.
GEO·AEOAI SEO
AI SEO is the umbrella label for SEO work in the AI search era — combining classic SEO with GEO, AEO and LLMO into a single workstream.
GEO·AEOAI Slop
AI Slop is a derogatory term for low-quality, mass-produced AI content — the exact category that search engines and LLMs are actively trying to filter out.
GEO·AEOAI Visibility
AI Visibility is a composite read on how present your brand is inside AI answers — rolling citations, mentions and share into a single 'do we exist in AI search?' number.
GEO·AEOAI Watermarking
AI watermarking embeds an imperceptible signal in AI-generated text, images or audio so that the content can later be identified as machine-made.
LLMAlt Text
Alt text is the text alternative for an image — used when the image can't render and read aloud by screen readers — and it affects both accessibility and image search visibility.
SEOAnchor Text
Anchor text is the clickable text inside a hyperlink — and one of the main signals search engines use to figure out what the linked page is about.
SEOAnchor Text Diversity
Anchor text diversity is how naturally varied the anchor texts of your backlinks are — over-optimisation toward a single money keyword reads as a manipulative pattern to search engines.
SEOAnswer Coverage
Answer coverage is the percentage of a defined target prompt set in which your brand shows up at least once inside the AI answer.
GEO·AEOAnswer Engine
An answer engine is a search system that returns the answer itself — usually a single cited paragraph — instead of a list of links. Perplexity and Google AI Overviews are the textbook examples.
GEO·AEOAPI-calling Agent
An API-calling agent is an agent that gets work done by hitting predefined APIs directly, working with data and capabilities instead of screens.
AI AgentApplebot-Extended
Applebot-Extended is the identifier Apple introduced to let site owners opt out of AI training separately from regular Applebot, which still powers Siri and Spotlight indexing.
GEO·AEOArc Search
Arc Search is the AI-powered search experience from The Browser Company — its 'Browse for Me' feature compiles a single answer from multiple pages instead of returning a list.
GEO·AEOARR
Annual recurring revenue (ARR) is recurring revenue normalised to a yearly view — the standard yardstick investors use to size a SaaS business.
MarketingAttribution Model
An attribution model is a framework for deciding how credit for a conversion is split across the different touchpoints a customer interacted with on the way there.
MarketingAutoGen
AutoGen is Microsoft Research's multi-agent framework, built around conversational agents that exchange messages and divide work between themselves.
AI AgentAutonomous Agent
An autonomous agent runs with minimal human input — it decomposes the goal, executes, evaluates and iterates on its own until the task is done.
AI Agent
B
Backlink
A backlink is an inbound link from another site to yours — one of the strongest signals search engines use to gauge a domain's authority and trustworthiness.
SEOBingbot
Bingbot is Microsoft's crawler for Bing and Copilot search indexing — and because Copilot's AI answers ride on the Bing index, it has become a GEO-relevant bot again.
GEO·AEOBlack Hat SEO
Black hat SEO is the umbrella for tactics that deliberately violate search-engine guidelines to chase short-term rankings — high-risk plays that get hit with penalties when caught.
SEOBlog SEO
Blog SEO is the version of content SEO tailored to blog formats — topic clusters, internal linking discipline and publishing cadence — and the most familiar SEO surface in the Korean market.
SEOBrand Awareness
Brand awareness is the degree to which customers recognise or recall a brand within a category — one of the foundational assets of any marketing function.
MarketingBrand Mention
A brand mention is any time your brand name appears as text inside an AI answer — separate from whether your domain is in the source list, but still a unit of exposure.
GEO·AEOBrand Positioning
Brand positioning is the deliberate work of placing your brand at a chosen coordinate in the customer's mental map — a sharper, brand-level extension of basic positioning.
MarketingBrand Storytelling
Brand storytelling is the practice of communicating who you are through narrative — context, characters, motivations — rather than reciting product features.
MarketingBranded Keywords
Branded keywords are queries that include your company, product or service name — high-intent searches from people who already know your brand and are deliberately looking for you.
SEOBranded Search
Branded search is any query that contains your brand name — and it's one of the most honest signals you have about real-world brand awareness and demand.
SEOBreadcrumb Navigation
Breadcrumb navigation is a secondary navigation pattern that shows where a page sits in the site hierarchy — useful for users and visible in search result snippets.
SEOBroken Link
A broken link is any link that fails to resolve — usually 404 — and quietly degrades both user experience and crawl efficiency the longer it is left in place.
SEOBroken Link Building
Broken link building is the outreach tactic where you find dead links on other sites and propose your own page as the replacement target.
SEOBrowser-use Agent
A browser-use agent is an agent that drives a real web browser — navigating sites, filling forms, even completing checkouts — and is becoming a default interface in AI search and shopping.
AI AgentBuyer Persona
A buyer persona is a semi-fictional profile that summarises an ideal target customer's demographics, behaviours, goals and pain points in a single, shareable form.
MarketingBytespider
Bytespider is the web crawler operated by ByteDance, TikTok's parent — feeding its in-house AI models, search and recommendation systems.
GEO·AEO
C
CAC
Customer acquisition cost (CAC) is the total marketing and sales spend required to win one new paying customer.
MarketingCanonical Tag
The canonical tag tells search engines which URL is the master version when multiple URLs serve the same or near-duplicate content.
SEOCategory Design
Category design is the strategy of defining and owning a new category rather than competing inside an existing one — rewriting the market's rules in your favour.
MarketingCCBot
CCBot is the crawler operated by the nonprofit Common Crawl — and the dataset it produces is the starting point for the training data of many LLMs.
GEO·AEOCDN
A CDN (Content Delivery Network) caches your content on edge servers worldwide so users are served from a nearby node — directly improving TTFB, LCP and overall page speed.
SEOChain-of-Thought
Chain-of-Thought (CoT) prompting asks the LLM to walk through intermediate reasoning steps before giving a final answer — a simple change that meaningfully improves accuracy on harder problems.
LLMChatGPT Search
ChatGPT Search is the feature that lets ChatGPT combine its trained knowledge with live web results, citing sources alongside the answer.
GEO·AEOChatGPT Shopping
ChatGPT Shopping is the surface inside ChatGPT that returns product cards, pricing and review summaries — the centerpiece of commerce-side GEO.
GEO·AEOChunk Optimization
Chunk optimization is the practice of structuring content into self-contained passages an LLM can lift directly into its answer.
GEO·AEOChunking
Chunking is the practice of slicing long content into smaller units that LLMs can ingest cleanly — the same units that show up as citation passages in RAG and AI search.
GEO·AEOChurn Rate
Churn rate is the percentage of customers who leave or cancel during a given period — effectively the mirror image of retention.
MarketingCitation Optimization
Citation Optimization is the work of shaping content structure, phrasing and evidence so that AI answers cite it — the core line of effort in GEO content operations.
GEO·AEOCitation Rate
Citation rate is the share of a defined prompt set in which an AI answer cites your brand or domain — the headline KPI of GEO.
GEO·AEOCitation-worthiness
Citation-worthiness is how readily a piece of content gets quoted by an LLM — driven mainly by factual specificity, self-containment, structure and authority.
GEO·AEOClaude
Claude is Anthropic's LLM family, known for safety alignment, long-context handling and strong tool use — widely adopted in enterprise and developer settings.
LLMClaude.ai
Claude.ai is Anthropic's consumer-facing chat interface, a GEO surface that punches above its weight on long-form document work and research-heavy prompts.
GEO·AEOClaudeBot
ClaudeBot is Anthropic's web crawler used for training Claude and grounding its answers — manageable via robots.txt.
GEO·AEOCloaking
Cloaking serves different content to search bots than to real users — a black-hat technique that Google explicitly prohibits in its spam policies.
SEOCLS
CLS (Cumulative Layout Shift) is the Core Web Vitals metric for visual stability — it sums up how much page elements jump around unexpectedly while the page is loading.
SEOCoding Agent
A coding agent writes, edits, runs and tests code on its own — Claude Code, Cursor and Devin are the canonical examples in 2026.
AI AgentCohort Analysis
Cohort analysis groups users by a shared starting characteristic — usually signup week — and tracks their behaviour over time so you can see how each cohort evolves.
MarketingComparative Content
Comparative content sets two or more options against the same criteria — the format AI answer engines most often cite when users ask 'recommend' or 'A vs B' questions.
GEO·AEOComputer Use
Computer Use is the agent capability of perceiving the screen and driving the mouse and keyboard, letting an AI operate a computer the way a human would.
AI AgentConstitutional AI
Constitutional AI (CAI) is Anthropic's alignment technique where the model critiques and revises its own answers against a written set of principles — a 'constitution' — instead of relying entirely on human-labeled feedback.
AI AgentContent Audit
A content audit is a systematic review of every page on a site — graded by traffic, conversions and quality — that decides what to keep, improve, merge or remove.
SEOContent Cluster / Pillar Page
A content cluster is a structure where a pillar page covers a broad topic and supporting cluster posts answer its sub-questions, all tied together with internal links.
SEOContent Gap Analysis
Content gap analysis is the research step that surfaces topics and keywords your competitors rank for but you don't, so you can re-prioritise the editorial roadmap.
SEOContent Marketing
Content marketing is the practice of building trust and demand by publishing genuinely useful content, rather than buying attention through direct advertising.
MarketingContent Optimization
Content optimization is the practice of reworking already-published pieces — intent, structure, internal links, freshness — to lift their rankings and the traffic they earn.
SEOContent Pruning
Content pruning is the practice of deleting, merging or noindexing low-performing, duplicate or outdated pages to lift the overall quality signal of the site.
SEOContent Repurposing
Content repurposing is reshaping a piece you've already produced into different formats, channels or use cases — usually the highest-leverage way to lift the ROI of what you've already made.
SEOContent SEO
Content SEO is the umbrella term for earning organic visibility through the content you publish — quality, topical coverage and intent fit, rather than purely technical or link work.
SEOContext Engineering
Context engineering goes beyond crafting a single prompt — it is the design discipline of deciding which context to assemble and how to feed it to the model, an idea that crystallised in 2024–2025.
LLMContext Rot
Context rot is the phenomenon where LLM accuracy degrades as the context grows longer — the empirical reason a giant context window does not automatically mean better answers.
LLMContext Window
The context window is the maximum number of tokens an LLM can take in at once — it defines how much content the model can consider in a single prompt.
LLMConversational Search
Conversational search is the pattern where users refine a query through follow-up questions, treating search as a back-and-forth dialogue rather than a single shot.
GEO·AEOCore Web Vitals (CWV)
Core Web Vitals (CWV) is Google's set of headline metrics for quantifying page user experience — covering loading, interactivity and visual stability.
SEOCornerstone Content
Cornerstone content is the small set of pages your site relies on most for traffic, conversions and citations — the load-bearing columns of the content house.
SEOCornerstone Content
Cornerstone content is the small set of five to ten pages your site relies on most for traffic, conversions and citations — the load-bearing columns that anchor overall trust.
SEOCPA
Cost per acquisition (CPA) is the average marketing spend required to generate one conversion — used to judge whether a channel or campaign is paying its way.
MarketingCPC
Cost per click (CPC) is the average amount an advertiser pays for a single click — the default unit of measure for paid search and most performance display campaigns.
MarketingCPM
Cost per mille (CPM) is the cost paid for 1,000 ad impressions — the default pricing unit for awareness and reach campaigns.
MarketingCrawl Budget
Crawl budget is the amount of resource a search engine is willing to spend crawling a single site over a given period — a critical factor for indexing efficiency on large sites.
SEOCrawl Depth
Crawl depth is how many clicks it takes to reach a page from the homepage — the deeper a URL sits, the lower its crawl priority and perceived importance tend to be.
SEOCrawlability
Crawlability is how easily a search engine bot can reach and follow your site's pages — the precondition for indexing.
SEOCrawling
Crawling is the act of search engine bots following links to fetch and read pages — the step that has to happen before anything can be indexed or ranked.
SEOCrewAI
CrewAI is a multi-agent framework that lets you stand up role-based agents that work as a team, with role, goal and task defined declaratively.
AI AgentCRO
Conversion rate optimisation (CRO) is the structured practice of squeezing more conversions out of the traffic you already have by improving page, UX and messaging.
MarketingCTR
Click-through rate (CTR) is the share of impressions that resulted in a click — the most basic measure of how compelling an ad, link or search result is.
MarketingCustomer Advocacy
Customer advocacy turns satisfied customers into active brand advocates whose voice — through reviews, referrals and community — becomes a primary acquisition channel.
MarketingCustomer Success
Customer success is the discipline of proactively helping customers achieve their business goals with your product — increasingly treated as a core SaaS growth engine, not a support function.
MarketingCVR
Conversion rate (CVR) is the percentage of visitors or clicks that complete a defined goal — purchase, signup, lead form — and is the headline efficiency metric for most digital campaigns.
Marketing
D
DA / Domain Rating
DA (Moz) and DR (Ahrefs) are third-party scores from 0 to 100 that estimate a domain's backlink authority — they are tool metrics, not Google scores.
SEODark Funnel
The dark funnel describes the reality that most B2B buying decisions actually form inside untrackable channels — Slack, DMs, podcasts, communities — long before the form fill.
MarketingDark Social
Dark social refers to sharing that happens through private channels — DMs, messengers, email — where standard analytics tools can't see the referrer.
MarketingDaum / Kakao Search
Daum / Kakao Search is the Kakao-side search surface — Daum portal plus the Kakao ecosystem. Market share is small in Korea, but it still carries meaningful Korean-language search diversity and Kakao-native traffic.
SEODemand Generation
Demand generation is marketing aimed at creating category awareness and intent from scratch — building demand that didn't exist yet, rather than capturing existing search demand.
MarketingDisavow Tool
The Disavow Tool lets you tell Google to ignore specific backlinks when evaluating your site — a last-resort instrument typically reserved for actual manual actions.
SEODisplay Ad
Display ads are the image, video and HTML5 banners served across websites and apps — the oldest and still one of the broadest digital ad formats.
MarketingDofollow Link
A dofollow link is a regular hyperlink without a nofollow attribute — meaning search engines treat it as a normal authority-passing link by default.
SEODrip Campaign
A drip campaign is a pre-scheduled sequence of emails or messages that drip out over time — the most common vehicle for nurturing leads and onboarding new users.
MarketingDuplicate Content
Duplicate content is the same or near-identical content living at multiple URLs, leaving search engines unsure which version should represent the page.
SEODwell Time
Dwell time is how long a searcher stays on a page before bouncing back to the results — frequently cited as an indirect signal of whether the page actually satisfied the query.
SEODynamic Rendering
Dynamic rendering is the workaround of serving regular JavaScript-rendered pages to users while sending pre-rendered HTML to crawlers — historically a stopgap, increasingly discouraged.
SEO
E
E-commerce SEO
E-commerce SEO is the specialised practice of optimising shops — product pages, categories, faceted navigation, stock changes — where the structural issues are very different from a content site.
SEOE-E-A-T
E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) is Google's four-axis lens for content quality — and the same kinds of signals matter when LLMs decide whom to cite.
SEOEarned Media
Earned media covers exposure you didn't pay for directly — press coverage, word of mouth, organic mentions and user reviews.
MarketingEdge SEO
Edge SEO is the practice of running SEO logic at the CDN edge — typically Cloudflare Workers — so that redirects, headers and meta tags can be deployed without touching the origin codebase.
SEOEmail Marketing
Email marketing is direct, owned-channel communication with prospects and existing customers — and remains one of the highest-ROI tools in the CRM and retention stack.
MarketingEmbedding
An embedding is a numeric vector representation of text or other data that preserves semantic meaning — the foundation of semantic search, vector databases and RAG.
LLMEntity-Based SEO
Entity-based SEO organises content around entities — people, brands, products, concepts — rather than keywords, and works on the relationship signals between them.
SEOEvergreen Content
Evergreen content is content that keeps earning search demand and value long after it goes live — pieces whose relevance comes from fundamentals, not from the news cycle.
SEOEvergreen Content
Evergreen content keeps earning search demand and value long after publication — pieces whose relevance comes from fundamentals, not from the news cycle.
SEOExternal Link
An external link is an outbound link from your domain to another — and pointing to credible sources tends to act as a trust signal that supports your own content's authority.
SEO
F
Faceted Navigation
Faceted navigation is the filter-and-sort UX that multiplies URLs from a single catalog — extremely user-friendly, but a top cause of index bloat if left unmanaged.
SEOFCP
FCP (First Contentful Paint) measures the moment any meaningful content — text or image — first appears on screen, used as a supporting page-speed metric alongside Core Web Vitals.
SEOFeatured Snippet
A featured snippet is the boxed answer Google extracts from a single page and pins to the top of the SERP — often called 'position zero'.
SEOFew-shot Prompting
Few-shot prompting includes a small number of example inputs and outputs in the prompt itself, letting the LLM imitate the desired format or style without any retraining.
LLMFine-tuning
Fine-tuning takes an already pretrained LLM and trains it further on a narrower dataset to specialise it for a domain, task or voice — the most common path for adapting an LLM to your own data.
LLMFirst-Party Data
First-party data is information you collect directly from your own customers and channels — the most reliable marketing asset in the post-cookie era.
MarketingFlywheel
The flywheel is a self-reinforcing growth model — happy customers fuel new acquisition — that HubSpot proposed as a replacement for the linear funnel.
MarketingFunction Calling
Function calling is the interface that lets an LLM invoke predefined functions or APIs instead of just replying in natural language — the core mechanism behind AI agents.
LLM
G
GA4
Google Analytics 4 (GA4) is Google's current analytics platform for web and app, built on an event-based data model rather than the session-centric model that defined Universal Analytics.
MarketingGenerative Engine Optimization
Generative Engine Optimization is the full form behind the GEO acronym — optimizing content, data and signals so brands get cited inside generative AI search results.
GEO·AEOGenerative Search
Generative search is the search paradigm where results are delivered as an LLM-written answer rather than a list of links — think AI Overviews, ChatGPT Search, Perplexity.
GEO·AEOGEO
GEO (Generative Engine Optimization) is the practice of optimizing content and data so that a brand gets cited and recommended inside generative AI search answers like ChatGPT, Perplexity and Google AI Overviews.
GEO·AEOGoogle AI Mode
Google AI Mode is a Gemini-powered search mode inside Google Search that runs like a dedicated tab — a full-screen, conversational extension of AI Overviews.
GEO·AEOGoogle Algorithm
Google's algorithm is the layered system of hundreds of ranking signals that decides what shows up where in the SERP — periodically reshaped by core and topic-specific updates.
SEOGoogle Algorithm Updates
Google algorithm updates are the recurring algorithm refreshes Google rolls out — Core Updates, Helpful Content Updates, Spam Updates and Reviews Updates being the headline families.
SEOGoogle Business Profile
Google Business Profile (GBP) is Google's free business listing tool that powers your card on Search and Maps and lets you manage reviews and inquiries.
SEOGoogle Core Update
A Google Core Update is one of the broad algorithm refreshes Google ships a few times a year — a wide reassessment of site quality and E-E-A-T rather than a fix to a specific issue.
SEOGoogle Gemini
Google Gemini is Google's multimodal LLM and chatbot brand, powering AI Overviews, the Gemini app and Workspace integrations as a connected family of answer surfaces.
GEO·AEOGoogle Penalty
A Google penalty is any drop in visibility imposed for guideline violations — split between manual actions taken by a human reviewer and automatic algorithmic adjustments.
SEOGoogle Search Console
Google Search Console (GSC) is Google's free tool for monitoring how a site performs in Search — impressions, clicks, indexing status and technical issues.
SEOGoogle Search Operators
Google search operators are special syntax — site:, intitle:, inurl:, quotes — that let you narrow Google's results precisely. They're a daily-driver tool for SEO and content research.
SEOGoogle Trends
Google Trends is Google's free search-trend tool that shows the relative interest in a keyword over time and across regions.
SEOGoogle-Extended
Google-Extended is the separate user agent Google uses for training Gemini and Vertex AI, letting site owners control AI training access independently from regular search indexing.
GEO·AEOGooglebot
Googlebot is Google's official web crawler used to build the search index — controllable through robots.txt rules and identifiable by its User-Agent string.
SEOGPT
GPT (Generative Pre-trained Transformer) is OpenAI's family of Transformer-based LLMs — the engine behind ChatGPT and the de-facto baseline of the current AI market.
LLMGPTBot
GPTBot is OpenAI's official web crawler used for ChatGPT training and search indexing — controllable via robots.txt.
GEO·AEOGrounded Generation
Grounded Generation is the answering pattern where an LLM is forced to compose its reply on top of retrieved sources — AI search citations are the most visible example.
GEO·AEOGrounding
Grounding is the practice of anchoring an LLM's answer to external evidence — retrieved documents, search results, structured data — to push factual accuracy higher.
GEO·AEOGrowth Hacking
Growth hacking is the discipline that combines data, rapid experimentation and product changes to find scalable levers for user and revenue growth.
MarketingGrowth Loop
A growth loop is a self-reinforcing cycle in which existing users' actions generate new users — the modern alternative to the linear funnel for sustainable growth.
MarketingGuardrails
Guardrails are the layer of input/output checks added around an LLM to block unsafe responses, policy violations and leakage of sensitive information.
LLMGuest Blogging
Guest blogging is the classic link-building tactic of contributing content to other sites and earning a natural backlink to your own in the byline or body.
SEO
H
Hallucination
Hallucination is when an LLM produces confidently-stated information that is simply wrong — and it is one of the biggest threats to citation accuracy in GEO.
GEO·AEOHeading Tags (H1~H6)
Heading tags (H1 through H6) define a page's title hierarchy in HTML, signalling content structure to both users and search engines.
SEOHelpful Content Update
The Helpful Content Update (HCU) is Google's algorithm move to reward content built for people and demote thin pages built primarily for search engines.
SEOhreflang
hreflang is the tag that tells search engines which version of a page to serve to users by language and region when you have multiple localised URLs.
SEOHTTP Status Codes
HTTP status codes are the standard server responses (200, 301, 404, 500 and so on) that tell crawlers how to treat a request — and in SEO they directly steer indexing decisions.
SEOHTTPS
HTTPS (HyperText Transfer Protocol Secure) is HTTP traffic encrypted with TLS — and a baseline ranking signal Google has confirmed publicly.
SEOHuman-in-the-Loop
Human-in-the-loop (HITL) is the design pattern where an agent runs autonomously but routes critical decisions through a human for review and approval.
AI AgentHybrid Search
Hybrid search combines keyword (BM25) and vector retrieval to get the best of both — the default retrieval shape behind Perplexity-style answer engines and most production RAG.
LLM
I
ICP
An ideal customer profile (ICP) defines the company-level characteristics of your most valuable B2B customers — the anchor for targeting, content and sales decisions.
MarketingImage SEO
Image SEO is how you make images discoverable across image search, regular search and AI answers — through filenames, alt text, structured data and performance.
SEOImpression
Impressions count how many times your pages were shown in the search results — the foundational metric in Google Search Console, paired with clicks, CTR and average position.
SEOInbound Marketing
Inbound marketing is the model of pulling prospects in through useful content, search and social — the opposite of pushing ads at them — and was popularised by HubSpot.
MarketingIndex Bloat
Index bloat is the state where too many low-value or duplicate URLs are sitting in the search index, dragging down the site's average quality and indirectly hurting rankings.
SEOIndexability
Indexability is whether a crawled page is actually eligible to be stored in the search index — a page can be crawlable yet still not indexable.
SEOIndexing
Indexing is the step where a search engine stores a crawled page in its database. If a page is not indexed, it cannot appear in search results at all.
SEOInfluencer Marketing
Influencer marketing is the practice of partnering with creators who hold an audience's attention so they deliver brand messages in their own voice.
MarketingInformation Gain
Information Gain is the idea of scoring how much new information a page adds beyond what the existing results already provide — a concept from a Google patent that has become a working keyword in GEO content evaluation.
GEO·AEOINP
INP (Interaction to Next Paint) is the Core Web Vitals metric that captures overall interaction responsiveness across a session — and it officially replaced FID in March 2024.
SEOInstruction Tuning
Instruction tuning is the fine-tuning step that teaches a base LLM to follow instructions in natural language — the stage that turns 'a model that completes text' into 'a model you can actually ask things'.
LLMInternal Linking
Internal linking is the practice of connecting pages within the same domain — and it shapes crawl efficiency, how authority flows between pages, and how users move through the site.
SEOInternational SEO
International SEO is the discipline of running a site across multiple countries and languages — keeping hreflang, domain structure and localisation aligned so each market gets the right version.
SEO
J
Jailbreak
A jailbreak is a prompt-level trick that bypasses an LLM's safety restrictions to force it into producing content the model is supposed to refuse.
LLMJavaScript SEO
JavaScript SEO is the discipline of making sure JS-rendered pages get crawled and indexed correctly — usually via some combination of SSR, prerendering and hydration.
SEOJSON-LD
JSON-LD (JSON for Linked Data) is the JSON-based format used to embed Schema.org markup in a page — currently Google's recommended way to ship structured data.
SEOJTBD (Jobs-to-Be-Done)
Jobs-to-Be-Done (JTBD) reframes purchase as hiring: customers don't buy products, they hire them to do a specific job — a lens that surfaces motivations a feature list misses.
Marketing
K
Keyword Cannibalization
Keyword cannibalization happens when multiple pages on the same site target the same query and end up competing with each other, dragging all of their rankings down.
SEOKeyword Clustering
Keyword clustering is the practice of grouping keywords with the same intent so they map onto a single page or topic cluster — used to prevent cannibalization and to build topical authority.
SEOKeyword Density
Keyword density is the ratio of target-keyword occurrences to total words on a page — once a headline SEO signal, today only a minor secondary one.
SEOKeyword Density
Keyword density is the ratio of target-keyword occurrences to total words on a page — once a headline SEO signal, today only a minor secondary one.
SEOKeyword Difficulty
Keyword Difficulty (KD) is an SEO tool score — usually 0 to 100 — that estimates how hard it will be to rank on the first page for a given query.
SEOKeyword Ranking
Keyword ranking is the position your page holds for a given query in search results — the most intuitive single metric for tracking SEO progress over time.
SEOKeyword Research
Keyword research is the practice of finding and organising the words and questions your target audience actually types into search — the starting point of any SEO or GEO content plan.
SEOKeyword Stuffing
Keyword stuffing is the old-school habit of cramming a target keyword into a page far past what reads naturally — today a clear penalty signal, not a ranking trick.
SEOKnowledge Cutoff
Knowledge cutoff is the most recent date covered by an LLM's training data — the reason an AI may not know your current pricing, policy changes or newest products.
LLMKnowledge Distillation
Knowledge distillation trains a smaller 'student' model to mimic a larger 'teacher' model — preserving most of the quality while drastically cutting cost and latency.
LLMKnowledge Graph
A knowledge graph is a database of entities — people, brands, products — and their relationships, used by search engines and LLMs as the factual backbone of their answers.
SEOKnowledge Panel
The Knowledge Panel is the SERP feature that surfaces entity info — brands, people, works — in a card on the right of the results, rendered directly from Google's Knowledge Graph.
SEO
L
LangChain
LangChain is the most widely used open-source framework for building LLM apps and agents, bundling prompts, tools, memory and execution flow into composable modules.
AI AgentLangGraph
LangGraph is the graph-based agent workflow framework from the LangChain team — built so that branches, loops and human-in-the-loop steps are first-class.
AI AgentLCP / INP / CLS
LCP, INP and CLS are the three metrics that make up Core Web Vitals — measuring loading speed, interactivity (INP replaced FID in March 2024), and visual stability respectively.
SEOLead Magnet
A lead magnet is a free, valuable asset — guide, template, checklist — that prospects exchange their contact details for, making it the workhorse of inbound lead generation.
MarketingLead Nurturing
Lead nurturing is the practice of moving prospects who aren't ready to buy yet through a sequence of relevant content until they reach a buying decision.
MarketingLead Scoring
Lead scoring assigns numerical points to a prospect's behaviours and attributes so you can rank who is closest to a buying decision and prioritise outreach accordingly.
MarketingLifecycle Marketing
Lifecycle marketing tailors messaging and channels to where each customer is in their relationship with the brand — signup, activation, purchase, repurchase, churn risk.
MarketingLink Building
Link building is the deliberate marketing, content and outreach work that earns inbound backlinks from other sites to yours.
SEOLink Equity
Link equity (often called 'link juice') is the authority and ranking signal a page passes to another page through a link.
SEOLink Velocity
Link velocity is the rate at which a domain acquires new backlinks over time — and whether the curve looks organic or suspiciously spiky is itself a signal search engines watch.
SEOListicle
A listicle is a numbered or bulleted list-style article — an LLM-friendly format because answer engines can lift one item at a time without needing the rest of the article.
GEO·AEOLlamaIndex
LlamaIndex is an LLM framework focused on RAG and data integration — a toolkit for indexing diverse documents, databases and APIs and connecting them to a model.
AI AgentLLM
A large language model (LLM) is a neural network trained on massive text corpora to understand and generate human language — the engine behind ChatGPT, Claude, Gemini and similar products.
LLMLLM Benchmark
An LLM benchmark is a standardised test used to compare model capabilities — the source of those headline scores you see in every model launch announcement.
LLMLLM Observability
LLM Observability is the infrastructure that records LLM inputs, outputs and intermediate signals so changes and anomalies can be detected — the data layer that GEO measurement quietly relies on.
GEO·AEOLLM Visibility
LLM Visibility measures how often and how accurately an LLM surfaces your brand in its own responses — covering both search-grounded answers and general chat replies.
GEO·AEOLLM-as-a-Judge
LLM-as-a-judge is the practice of using one LLM to grade or compare the answers of another — a standard way to scale evaluation beyond what human labelling can cover.
LLMLLMO
LLMO (Large Language Model Optimization) is the work of shaping content, data and context signals so that LLMs understand and cite your brand correctly.
GEO·AEOllms.txt
llms.txt is a proposed text file placed at the site root that tells large language models where the most important content lives — think 'sitemap, but written for LLMs'.
GEO·AEOLocal Pack
The Local Pack is the SERP block that surfaces three nearby businesses on a map for queries with local intent — and the headline visibility surface for local SEO.
SEOLocal SEO
Local SEO is the practice of ranking for location-based searches — anchored on business profiles like Google Business Profile and Naver Place.
SEOLog File Analysis
Log file analysis is the practice of inspecting raw server access logs to see exactly how search and AI bots crawl your site — the most direct, no-guesswork view of crawl behaviour.
SEOLong-tail Keyword
A long-tail keyword is a longer, more specific phrase — usually three or more words — that gets less search volume than a head term but tends to convert better and faces less competition.
SEOLost in the Middle
Lost in the Middle is the well-documented effect where information sitting in the middle of a long context is used much less reliably than what sits at the beginning or end — the empirical basis for 'put the important stuff at the front or back'.
LLMLTV
Lifetime value (LTV) is the estimated total revenue — or profit — a single customer is expected to generate over the entire relationship with your business.
MarketingLTV:CAC Ratio
The LTV:CAC ratio compares lifetime value to acquisition cost — the single cleanest test of whether a growth engine has healthy unit economics.
Marketing
M
Marketing Automation
Marketing automation is the tooling and strategy that triggers email, CRM, ads and in-app messages automatically based on user behaviour and lifecycle stage.
MarketingMarketing Funnel
A marketing funnel is the staged model — usually visualised as a narrowing funnel — that tracks prospects from first awareness through to purchase and loyalty.
MarketingMartech Stack
A martech stack is the bundle of software a marketing team operates together to plan, execute and measure — typically anchored by CDP, CRM, automation and analytics.
MarketingMAU / DAU
MAU and DAU (Monthly and Daily Active Users) count the unique users who actually engaged with your product in a given window — the standard size and stickiness metric for digital products.
MarketingMCP
MCP (Model Context Protocol) is the open standard introduced by Anthropic for connecting LLMs to external tools and data sources in a consistent way.
AI AgentMeta Description
The meta description is the short page summary shown below the title in search results — not a direct ranking factor, but a major lever on click-through rate.
SEOMeta Robots Tag
The meta robots tag sits in the page <head> and tells crawlers whether to index it and follow its links — the per-page lever for indexing policy.
SEOMeta Tag
Meta tag is the umbrella term for the metadata tags that live inside an HTML <head> — including title, description, viewport, robots and Open Graph tags.
SEOMeta-ExternalAgent
Meta-ExternalAgent is the user agent Meta uses to crawl the web for its AI products and models — manageable separately via robots.txt.
GEO·AEOMicrosoft Copilot
Microsoft Copilot is Microsoft's AI assistant integrated across Bing, Edge and Office — and one of the AI search surfaces with the strongest enterprise reach.
GEO·AEOMobile SEO
Mobile SEO covers the rendering, speed and UX of your site on mobile devices — effectively a baseline expectation since Google moved to mobile-first indexing.
SEOMobile-First Indexing
Mobile-first indexing is Google's policy of using the mobile version of a page as the primary basis for indexing and ranking.
SEOModel Distillation
Model distillation trains a small 'student' model to imitate the outputs of a large 'teacher' model — the standard way to move expensive-model quality into a cheaper one.
LLMModel Routing
Model routing dispatches each query to the most suitable model based on difficulty or category — the de-facto pattern for balancing cost, accuracy and latency in production AI.
LLMMoE
MoE (Mixture of Experts) is an LLM architecture that activates only a subset of many smaller 'expert' networks per token — letting teams ship bigger models at roughly the same compute cost.
LLMMQL
A marketing qualified lead (MQL) is a prospect whose engagement and fit signals indicate they are ready to be handed off from marketing to sales.
MarketingMRR
Monthly recurring revenue (MRR) is the sum of subscription revenue you can reliably expect each month — the headline growth signal for any subscription or SaaS business.
MarketingMulti-Agent System
A multi-agent system is several AI agents with different roles cooperating on the same task — used when one agent alone is not enough to solve the problem.
AI AgentMulti-Touch Attribution
Multi-touch attribution (MTA) distributes credit for a conversion across every marketing touchpoint a user encountered, rather than handing it all to the last click.
MarketingMultimodal Model
A multimodal model is an LLM that can take in and reason over more than just text — typically combining images, audio or video alongside written prompts.
LLMMultimodal Search
Multimodal search lets users query with images, audio or video alongside text — the new entry channel created by 'snap a photo and ask' user behaviour.
LLM
N
Naver Search Advisor
Naver Search Advisor is Naver's webmaster tool — the place to register your site, submit sitemaps and diagnose how it appears in Naver Search.
SEONaver SEO
Naver SEO is the Korea-specific practice of optimising for Naver Search — making content and source signals fit how Naver ranks blogs, cafés, VIEW results and websites.
SEONegative SEO
Negative SEO refers to outside attacks intended to drag a competitor's rankings down — typically through spammy backlink campaigns or scraped, duplicated content.
SEONLU
NLU (Natural Language Understanding) is the field focused on machines interpreting human language intent and context — the foundation under intent analysis and query handling in AI search.
GEO·AEONofollow
Nofollow is a rel attribute on a link telling search engines not to pass link equity along that link.
SEOnoindex / nofollow
noindex tells search engines not to add a page to the index, while nofollow tells them not to follow a specific link — both are page-level robots directives.
SEONorth Star Metric
A north star metric (NSM) is the single number that best captures the core value your product delivers to customers, used to align decisions across the whole company.
MarketingNPS
Net promoter score (NPS) asks users how likely they are to recommend the product on a 0–10 scale, then takes promoters minus detractors as a single loyalty number.
MarketingNRR
Net revenue retention (NRR) measures how much of last year's customer cohort revenue you've kept and grown a year later — the cleanest single read on SaaS business health.
Marketing
O
OAI-SearchBot
OAI-SearchBot is OpenAI's separate crawler for ChatGPT Search indexing — distinct from GPTBot, so you can control training and search-indexing access independently.
GEO·AEOOff-Page SEO
Off-page SEO is the umbrella for everything that builds your domain's authority and trust outside your own site — backlinks, press coverage, brand mentions, citations.
SEOOn-Page SEO
On-page SEO is the work you do inside a page itself — title, headings, body copy, internal links — to align it with search intent and make ranking signals legible to engines.
SEOOpen Graph Meta Tags
Open Graph meta tags are the Facebook-originated tag set that has become a de facto standard for defining how a page looks when shared on social platforms or messengers.
SEOOpen-weight Model
An open-weight model is an LLM whose weights are publicly released so anyone can download and run it on their own infrastructure — Llama, Mistral and Qwen are the best-known examples.
LLMOpenAI Assistants API
OpenAI's Assistants API is the company's hosted toolkit for building agents — bundling tool use, files, memory and the execution loop into one managed service.
AI AgentOrchestrator Agent
An orchestrator agent is the top-level agent that schedules sub-agents, assigns roles and enforces stop conditions — the control tower of a multi-agent system.
AI AgentOrganic Search
Organic search is the unpaid portion of a search results page — the listings that don't carry an 'Ad' label, and the surface SEO and GEO actually compete on.
SEOOrganic Traffic
Organic traffic is the share of visitors who arrive from unpaid search results — the baseline metric most teams use to judge whether SEO is actually working for them.
SEOOrphan Page
An orphan page is a URL that no other page on the site links to — invisible to internal navigation and badly disadvantaged in discovery, evaluation and ranking.
SEOOwned Media
Owned media is any channel your company directly controls — your website, blog, app, newsletter and customer accounts all count.
Marketing
P
PAA
PAA (People Also Ask) is the expanding question box on Google SERPs — every click reveals more related questions, dynamically generated by Google.
SEOPageRank
PageRank is the foundational algorithm Google was built on — modelling links as votes between pages — and it remains the etymological root of how the SEO industry talks about backlinks.
SEOPageSpeed Insights
PageSpeed Insights (PSI) is Google's free tool that scores a page's performance on mobile and desktop, using Core Web Vitals and offering concrete optimization tips.
SEOPagination
Pagination is the practice of splitting a long list across multiple pages — easy to ship, but a frequent source of duplicate, thin and orphan-page issues if handled carelessly.
SEOPaid Media
Paid media is any channel where you pay to be seen — search ads, display, social ads, video and OTT all fall under this umbrella.
MarketingParasite SEO
Parasite SEO is the tactic of publishing content on high-authority third-party platforms — Medium, LinkedIn, Reddit — to ride their domain authority into the top results instead of building your own.
SEOPermission Model
A permission model defines which tools, data and actions an agent is allowed to touch — the core safety layer for any autonomous agent.
AI AgentPerplexity
Perplexity is an answer engine that turns search results into a single cited answer, attaching a numbered source to every sentence — making it a common reference surface for measuring GEO performance.
GEO·AEOPerplexityBot
PerplexityBot is the web crawler Perplexity uses to gather sources for its answer engine — controllable separately via robots.txt.
GEO·AEOPillar Page
A pillar page is the hub at the centre of a topic cluster — a broad page on a large theme that interlinks with the narrower cluster pages around it.
SEOPillar Page
A pillar page is the hub at the centre of a topic cluster — a broad page that maps the whole theme and routes readers out to the narrower cluster pages.
SEOPlanning Agent
A planning agent is an agent that first drafts a multi-step plan for a goal and then executes it step by step, calling tools as needed.
AI AgentPLG
Product-led growth (PLG) is a model where the product itself drives acquisition, conversion and expansion — making it the default growth strategy for many modern SaaS businesses.
MarketingPMF
Product-market fit (PMF) is the state where a product clearly satisfies a real market demand — usage compounds, churn drops and word of mouth starts doing real work.
MarketingPosition Zero
Position zero is the answer box that appears above the regular #1 result — the featured-snippet slot that loses you some clicks but earns disproportionate brand exposure.
SEOPositioning
Positioning is the deliberate work of shaping the place a brand occupies in the customer's mind, relative to alternatives.
MarketingPretraining
Pretraining is the initial stage where an LLM is trained on huge amounts of text to learn general language capability — the step where the model absorbs most of its 'world knowledge'.
LLMPrimary Keyword
The primary keyword is the single search term a page is built around — the one that the title, H1 and meta description should all consistently point to.
SEOPrimary Keyword
The primary keyword is the single search term a page is built around — the one your title, H1 and meta description should all consistently point at.
SEOProgrammatic Advertising
Programmatic advertising is the automated, auction-based way of buying and serving ad inventory in real time, replacing the manual insertion-order workflow.
MarketingProgrammatic SEO
Programmatic SEO is the practice of combining a database with templates to generate hundreds or thousands of pages automatically — capturing patterned demand like '[city] + [service]' at scale.
SEOPrompt Caching
Prompt caching reuses the computation done on a repeated system prompt or document so subsequent calls are dramatically cheaper and faster — a direct lever on operating costs for repetitive workloads like GEO monitoring.
LLMPrompt Chaining
Prompt chaining is the simplest agent pattern — a sequence of prompts where each step's output feeds the next step's input.
AI AgentPrompt Engineering
Prompt engineering is the practice of crafting inputs that steer an LLM toward better outputs — a way to dramatically change result quality without retraining the model.
LLMPrompt Injection
Prompt injection is an attack where instructions hidden in untrusted data override the system prompt and force the LLM into unintended behaviour.
LLM
Q
Q&A Format Content
Q&A format content puts the user's likely question in the heading and lands the answer immediately below — one of the cleanest patterns for AI answer engines to lift.
GEO·AEOQuantization
Quantization compresses model weights to lower precision (say, 16-bit down to 4-bit) so the same model fits on smaller GPUs and runs more cheaply.
LLMQuery Decomposition
Query decomposition is the technique of breaking a complex question into smaller, easier sub-questions — a building block used widely across AI search and LLM reasoning.
GEO·AEOQuery Fan-Out
Query fan-out is the mechanism where an AI search engine expands a single user query into multiple sub-queries, runs them in parallel, then composes a single answer from the combined results.
GEO·AEOQuery Rewriting
Query rewriting is the step where the search system rephrases a user's prompt into a form better suited for retrieval — typically the first stage of an AI search pipeline.
GEO·AEO
R
RAG
RAG (Retrieval-Augmented Generation) lets an LLM fetch external documents at answer time and ground its response in them — the technique behind ChatGPT Search, Perplexity and most AI search products.
LLMRAG Evaluation
RAG evaluation is the practice of measuring a retrieval-augmented system's quality across both stages — retrieval and generation — so you can see why an answer went wrong, not just that it did.
LLMReAct
ReAct (Reasoning + Acting) is the classic agent pattern where an LLM loops through Thought, Action and Observation steps — reasoning out loud and calling tools as it goes.
AI AgentRedirect Chain
A redirect chain is when a URL has to pass through two or more redirect hops before reaching its final destination — costing crawl budget, page speed and a slice of link equity along the way.
SEOReferring Domain
Referring domains is the count of unique domains linking to your site — a more meaningful authority signal than raw backlink count, which can pile up from a single source.
SEOReflexion
Reflexion is an agent pattern where the agent reviews its own previous attempt, writes a critique, and uses that critique to do better on the next try.
AI AgentReranker
A reranker re-scores the candidate documents that retrieval produced and reorders them — the final gate that decides which sources an AI actually cites.
LLMRetention
Retention is the share of users who continue to use or purchase from your product over time after their first touch — a primary signal of long-term product health.
MarketingRich Snippet
A rich snippet is a search result enriched with extra information — star ratings, prices, images, FAQ — that tends to outperform plain text results on CTR.
SEORLHF
RLHF (Reinforcement Learning from Human Feedback) trains an LLM using human preference signals so it produces more helpful, safer responses — the recipe behind the leap in ChatGPT-style quality.
LLMROAS
Return on ad spend (ROAS) is revenue divided by ad spend — the headline efficiency metric for performance campaigns where revenue can be tracked back to the channel.
Marketingrobots.txt
robots.txt is the text file at a site's root that tells search engines and AI crawlers which paths they may or may not crawl — a long-standing web standard.
SEO
S
Sandboxing
Sandboxing means running an agent in an isolated environment so its actions cannot reach the outside system — a baseline practice for any autonomous agent.
AI AgentSchema.org
Schema.org is the shared vocabulary co-sponsored by Google, Microsoft, Yahoo and Yandex that lets you label what each page means so search engines and AI can understand it.
SEOSearch Intent
Search intent is the underlying goal behind a query — typically grouped as informational, navigational, commercial or transactional — and matching it is what separates pages that rank from pages that don't.
SEOSearch Volume
Search volume is the average number of times a keyword is searched in a given period — usually per month — and it's one of the basic inputs for prioritising SEO opportunities.
SEOSecondary Keyword
Secondary keywords are the related terms that round out a page's meaning beyond the primary keyword — woven into subheadings, body copy and FAQs to widen its semantic reach.
SEOSeed Keyword
A seed keyword is the short, core term you feed into a research tool to kick off keyword expansion — the anchor that decides which related queries you'll see next.
SEOSeed Keywords
Seed keywords are the short, descriptive starting terms you use to kick off keyword research — usually the words that name your category, product or problem.
SEOSEM
Search engine marketing (SEM) refers to paid promotion within search engine result pages — primarily Google Ads and equivalent search ad networks.
MarketingSemantic Chunking
Semantic Chunking splits content along meaning boundaries rather than fixed lengths — preserving context inside each passage and producing GEO-friendly citation units.
GEO·AEOSemantic Search
Semantic search matches results by understanding the meaning and intent behind a query rather than matching exact keywords — the default mode of modern search engines and LLMs.
SEOSERP
SERP (Search Engine Results Page) is the page a search engine returns for a query — now mixing organic links with ads, rich features and AI-generated answers.
SEOSERP Features
SERP features are the everything-that-isn't-ten-blue-links: featured snippets, People Also Ask, image packs, video carousels, AI Overviews and the rest of the modern result page.
SEOSERP Volatility
SERP volatility is a measure of how much rankings are shifting compared with a normal day — usually the first signal teams use to spot a Google algorithm update in flight.
SEOSGE
SGE (Search Generative Experience) was Google's 2023 experimental brand for generative search — the predecessor that has since been folded into and rebranded as AI Overviews.
GEO·AEOShare of AI Voice
Share of AI Voice is the combined share of mentions and citations your brand earns inside a category's AI answers — the closest thing GEO has to a market-share metric.
GEO·AEOShare of Model
Share of Model is brand share of voice measured per model — splitting the metric across ChatGPT, Gemini, Claude, Perplexity and others rather than rolling them into one figure.
GEO·AEOShare of Voice
Share of voice in AI search is the proportion of category-level answers in which your brand appears, compared with competitors.
GEO·AEOShort-tail Keyword
A short-tail keyword is a one- or two-word, broad query — high in search volume but vague in intent, and usually fiercely competitive to rank for.
SEOSite Architecture
Site architecture is how you organise pages into categories and connect them via internal links — the structure that tells both search engines and AI what your site is really about.
SEOSite Migration
Site migration is any change that touches the substance of a site — domain, platform, URL structure, redesign — and historically the project where SEO equity is most at risk.
SEOSitelinks
Sitelinks are the additional sub-page links Google shows beneath a main result — typically on brand searches — auto-selected from your site structure.
SEOSitemap.xml
An XML sitemap is a structured file that lists the important URLs of a site so search engines can discover and crawl them efficiently — its impact grows with site size.
SEOSoft 404
A soft 404 is a page that has no real content — or shouldn't exist anymore — but still returns 200 OK, so search engines misread it as a thin but live URL.
SEOSource Attribution
Source attribution is the way AI answers expose where the information came from — citation cards, footnotes or inline links that let users verify the claim and click through.
GEO·AEOSpeculative Decoding
Speculative decoding speeds up inference by letting a small 'draft' model propose several tokens at once and a big model verify them in one shot — a major lever on latency without losing quality.
LLMSQL
A sales qualified lead (SQL) is a prospect that sales has independently verified — confirmed intent, budget and authority — making them the real starting point of an active sales motion.
MarketingSSR (Server-Side Rendering)
SSR (Server-Side Rendering) builds the page HTML on the server before responding, so crawlers and AI bots can read the content without having to execute JavaScript.
SEOStreaming Response
Streaming response is the mode where an LLM emits tokens to the client as they are generated, instead of waiting for the full answer to finish.
LLMStructured Data
Structured data is content marked up in a standard format so search engines and AI systems can understand exactly what each part of the page means.
SEOStructured Output
Structured output forces an LLM to reply in a predefined JSON or schema shape instead of free text — essential when you need to plug AI reliably into other systems.
LLMSubdomain
A subdomain is a separately addressed prefix in front of your root domain (blog.example.com) — and the long-running counterpart in the 'subdomain vs subfolder' SEO debate.
SEOSwarm
Swarm is OpenAI's lightweight, experimental multi-agent framework that boils coordination down to two ideas: handoffs between agents and small routines they each follow.
AI AgentSXO
SXO (Search Experience Optimization) blends classic SEO with UX and CRO to optimise the full journey — from the search query to the moment a user converts on your site.
SEOSystem Prompt
A system prompt is the instruction sent to an LLM before any user message, defining the assistant's role, tone and rules — effectively the AI product's character.
LLM
T
Technical SEO
Technical SEO is the infrastructure-level work — crawling, indexing, rendering, speed, structured data — that makes a site readable and rankable for search engines in the first place.
SEOTemperature
Temperature is a parameter that controls how much randomness the LLM allows when picking the next token — lower values give consistent answers, higher values give more creative ones.
LLMTest-Time Compute
Test-time compute is the paradigm of spending more inference effort per query to improve accuracy — the shift made tangible by reasoning-focused models like OpenAI o1 and DeepSeek R1.
LLMThin Content
Thin content is content that adds little or no value for users — shallow, duplicated, or auto-generated — and it tends to get downgraded under Google's quality systems.
SEOThought Leadership
Thought leadership is the strategy of publishing original perspective and insight that shapes industry conversation — positioning the brand as a go-to authority in its category.
MarketingTitle Tag
The title tag is the HTML element that defines a page's title — the blue link text shown in search results and one of the strongest on-page ranking signals you can control.
SEOTOFU·MOFU·BOFU
TOFU/MOFU/BOFU splits the marketing funnel into Top, Middle and Bottom stages — awareness, consideration and decision — so content and KPIs can be tailored to each stage.
MarketingToken
A token is the basic unit an LLM reads and writes — usually a word or piece of a word. LLM pricing and context limits are all measured in tokens.
LLMTokenization
Tokenization is the preprocessing step that breaks text into the small pieces a model actually consumes — and it directly drives cost, context length and multilingual performance.
LLMTool Use
Tool use is an LLM calling external APIs, calculators or search systems directly to ground its answers — the foundational behaviour of every agent.
AI AgentToolformer
Toolformer is the tool-learning paradigm introduced in a 2023 Meta paper, in which an LLM teaches itself when and how to call APIs rather than relying on hand-crafted prompts.
AI AgentTopic Cluster
A topic cluster is a content structure where one hub (pillar) page sits at the centre and a set of narrower sub-topic pages link back into it.
SEOTopical Authority
Topical authority is the credit a domain earns when search engines decide it covers an entire subject area deeply and consistently — not just one or two posts.
SEOToxic Backlink
A toxic backlink is a low-quality inbound link — from spam, hacked sites, link farms — that can raise penalty risk if left unaddressed.
SEOTransformer
The Transformer is the neural network architecture behind almost every modern LLM, using self-attention to weigh relationships between all tokens in a sequence in parallel.
LLMTTFB
TTFB (Time to First Byte) measures how long it takes from a request being sent until the first byte of the response arrives — a foundational metric for server responsiveness and LCP work.
SEO
U
UCP
UCP (Universal Commerce Protocol) is the AI-agent payment and checkout protocol Google introduced at NRF 2026, aimed at standardising how agents buy products on a user's behalf.
AI AgentUGC
User-generated content (UGC) is content created by customers themselves — reviews, photos, videos, social posts — and acts as both a credibility signal and a low-cost reach engine.
MarketingURL Rating (UR) / Page Authority (PA)
URL Rating (Ahrefs) and Page Authority (Moz) are vendor-specific 0-100 scores that estimate the link-equity strength of a single URL — they are page-level metrics from two different tools, not synonyms.
SEOURL Slug
A URL slug is the trailing path segment of a page URL — a short, lowercase identifier that signals what the page is about both to readers and to search engines.
SEOURL Structure
URL structure is the deliberate hierarchy and pattern of your URLs — from domain through directories to slug — designed so both users and search engines can read where a page sits in your site.
SEOUTM Parameter
UTM parameters are standardised query strings appended to URLs that label the source, medium and campaign so you can tell where each visit came from.
Marketing
V
Value Ladder
A value ladder is a product structure that arranges offerings from low-price entry tiers up to premium tiers, designed so customers climb the ladder as they get more value over time.
MarketingValue Proposition
A value proposition is the single-sentence promise that explains why a customer should choose your product over the alternatives — the anchor for every other marketing message.
MarketingVector Database
A vector database stores embeddings and performs fast similarity search across them — the core infrastructure behind RAG and semantic search.
LLMVideo SEO
Video SEO is the practice of optimising metadata, schema and video sitemaps so that your video content surfaces in regular search, video tabs and increasingly inside AI answers.
SEOViral Coefficient
Viral coefficient (K-factor) measures how many new users one existing user generates on average — once it crosses 1.0, the product grows on its own without ads.
MarketingVLM
A VLM (Vision-Language Model) is trained to reason over images and text together — the technology behind AI looking at your product photos, logos and shelf shots, not just your copy.
LLMVoice of Customer
Voice of customer (VoC) is the systematic practice of gathering and analysing customer feedback — reviews, interviews, surveys, support tickets — and feeding it back into product and marketing decisions.
MarketingVoice Search
Voice search is the family of queries spoken to phones, speakers and cars — typically phrased as natural-language questions and answered with a single result.
SEO
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YMYL
YMYL (Your Money or Your Life) refers to topics — health, finance, safety, legal — where bad information can cause real-world harm, prompting Google to apply a higher trust bar.
SEOYou.com
You.com is an AI-search startup that blends generative answers, web results and embedded apps — answers appear alongside cited sources and inline widgets.
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