GEO & AI search glossary

Plain-English definitions for every term you'll meet while optimizing for AI search. Click any term for a full explanation, examples, and related concepts.

AEO

Answer Engine Optimization — optimizing for direct-answer surfaces like AI assistants and voice search.

AI Crawler

An automated bot operated by an AI company that fetches web pages for training or live answering.

AI Overviews

Google's AI-generated answers that appear above the classical search results.

Citation Tracking

Measuring how often AI engines cite your domain in answers to target queries.

E-E-A-T

Google's quality framework: Experience, Expertise, Authoritativeness, Trustworthiness.

Embeddings

Numerical vectors that represent the meaning of text, used by AI to find semantically similar content.

Entity SEO

Optimizing for entity recognition — making sure search engines know exactly who or what your brand is.

FAQPage Schema

Schema.org type for marking up question-and-answer content so search and AI engines can extract Q&A pairs.

GEO

Generative Engine Optimization — optimizing for citation by AI chat, search, and assistants.

GPTBot

OpenAI's web crawler that gathers training data for ChatGPT models.

HowTo Schema

Schema.org type for marking up step-by-step instructions.

IndexNow

A protocol that pings search engines (Bing, Yandex) the moment a URL is published or updated.

Knowledge Graph

A structured database of entities (people, places, things) and their relationships, used by search engines to disambiguate.

llms.txt

A plain-text file at the root of your site that tells AI models which URLs are worth reading.

Organization Schema

Schema.org type that identifies the entity behind a website.

RAG

Retrieval-Augmented Generation — the technique behind most AI search citations.

robots.txt

A file at the root of your domain that tells crawlers which paths they're allowed to fetch.

sameAs

A schema.org property used to declare authoritative external profiles for an entity.

Schema Markup

Structured data (usually JSON-LD) that describes a page's content in a machine-readable way.

Semantic Search

Search based on meaning rather than exact keyword matching.

Speakable Schema

Schema.org property marking the parts of a page suitable for voice playback.

Vector Search

Search powered by embedding similarity instead of keyword matching.

Voice Search

Search queries spoken to voice assistants (Siri, Alexa, Google Assistant) instead of typed.

Zero-Click Search

Searches that end without the user clicking through to any website.