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15 terms · plain language · deep-linkable definitions
The fifteen acronyms, protocols, crawlers, and concepts that actually matter in 2026 AI SEO. Each entry has its own deep page at /glossary/<term>/ with the full definition, related-terms map, and FAQ. Click any card to jump in.
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How this glossary works: we used to ship all 15 definitions on this single page. To make every term a first-class entity that LLMs and search engines can canonical-link to, each definition now lives on its own page at /glossary/<slug>/ with expanded explanation, related-terms map, and FAQ. This page is the index — pick a term to jump to its full definition.
The umbrella discipline of optimizing for generative-AI surfaces — citation, agent navigation, and first-party data exposure.
Read full definitionThe work of getting your brand cited inside AI-generated answers across ChatGPT, Perplexity, Claude, Copilot, Gemini, and Google AI Overviews.
Read full definitionOpenAI's training-data crawler. Distinct from OAI-SearchBot (live retrieval) and ChatGPT-User (user-triggered fetches).
Read full definitionAnthropic's training-data crawler. Distinct from Claude-Web (live retrieval) and Claude-User (Project / Computer Use fetches).
Read full definitionPerplexity's web crawler. Plus Perplexity-User, the live-retrieval agent that fetches sources at answer time.
Read full definitionMarkdown file at site root that gives LLMs a curated map of important pages. Proposed by Answer.AI's Jeremy Howard, Sept 2024.
Read full definitionAnthropic's open-source protocol (Nov 2024) for connecting LLMs to first-party data sources. Lets a brand expose a server an LLM can query directly.
Read full definitionGoogle's open protocol (Sept 2025) for AI agents to authenticate, authorize, and complete payments on behalf of users.
Read full definitionThe W3C-backed vocabulary for marking up web content with machine-readable types. Foundation of every AI-citation engagement.
Read full definitionThe work of teaching search engines and LLMs that your brand is a recognized entity — through Organization schema, sameAs links, and Knowledge Graph mapping.
Read full definitionThe percentage of category-relevant prompts on which an AI engine cites your brand. The closest thing AEO has to a clean KPI.
Read full definitionGemini-powered summary block above the classic Google SERP. Launched as SGE (May 2023), rebranded and made default in May 2024.
Read full definitionThe emerging commerce surface where AI agents (ChatGPT Agent, Claude Computer Use, Gemini) complete purchases on behalf of users.
Read full definitionThe model pattern where an LLM grounds its answer in retrieved sources rather than relying on training-data memory alone.
Read full definitionMachine-readable annotations on web content, typically shipped as schema.org JSON-LD. The most-leveraged AEO foundation.
Read full definitionWe bundle classic SEO, AEO, and GEO into one retainer — citation share measured weekly across 10+ engines via our Workspace. 941+ verified reviews · 4.9/5.
