Glossary

SEO, AEO & GEO terminology.

A comprehensive reference of the terms that shape modern search visibility — from traditional SEO fundamentals to AI-generated answers and generative engine optimization.

281 terms|19 categories

Featured terms

301 Redirect

Current

A permanent redirect that passes link equity from an old URL to a new one.

Technical SEORead

302 Redirect

Current

A temporary redirect that does not fully pass link equity to the destination URL.

Technical SEORead

404 Error

Current

An HTTP status code indicating that a requested page does not exist on the server.

Technical SEORead

410 Gone

Current

An HTTP status code indicating a page has been permanently removed and will not return.

Technical SEORead

AEO

Industry Term

Abbreviation for Answer Engine Optimization.

AEO — Answer Engine OptimizationRead

Agentic Search

Emerging

A search paradigm where AI agents autonomously search, evaluate, and synthesize information on behalf of users.

Emerging Search ConceptsRead

Ahrefs

Current

A comprehensive SEO toolset for backlink analysis, keyword research, and competitive research.

SEO Tools & PlatformsRead

AI Agents

Emerging

Autonomous AI systems that perform tasks on behalf of users, including searching and synthesizing information.

AI Search & AI OverviewsRead

AI Citation

Emerging

When an AI-generated answer includes a link or reference to a source page.

GEO — Generative Engine OptimizationRead

AI Crawler

Current

A web crawler used by AI companies to discover and fetch content for training or answering.

AI Search & AI OverviewsRead

AI Discoverability

Emerging

How easily AI systems can discover, understand, and use a brand's content.

Emerging Search ConceptsRead

AI Discovery

Emerging

The process by which users discover brands, products, or content through AI-generated answers.

GEO — Generative Engine OptimizationRead

AI Mention

Emerging

When a brand or source is referenced in an AI-generated answer, with or without a link.

GEO — Generative Engine OptimizationRead

AI Mode

Current

A Google Search mode that provides a fully AI-powered, conversational search experience.

SERP & Search AppearanceRead

AI Overview

Current

Google's AI-generated answer that appears at the top of search results for many queries.

SERP & Search AppearanceRead

AI Search

Current

Search powered by artificial intelligence that generates answers rather than just listing pages.

AI Search & AI OverviewsRead

AI Search Journey

Emerging

The sequence of AI-powered interactions a user has from initial question to final answer.

AI Search & AI OverviewsRead

AI Search Visibility

Emerging

A brand's overall presence across AI-powered search platforms and answer engines.

GEO — Generative Engine OptimizationRead

AI User Agent

Current

The identifier an AI crawler uses when accessing a website.

AI Search & AI OverviewsRead

AI Visibility

Emerging

How prominently a brand or content appears in AI-generated search responses.

GEO — Generative Engine OptimizationRead

AI Visibility Measurement

Emerging

The practice of tracking and measuring a brand's visibility in AI-generated search responses.

SEO Analytics & MeasurementRead

AI-First Search

Emerging

A search approach where AI-generated answers are the primary result, with traditional results as secondary.

Emerging Search ConceptsRead

AI-Generated Answer

Current

A synthesized response produced by an AI system from one or more source pages.

AI Search & AI OverviewsRead

Algorithm Update

Current

Any change to a search engine's ranking algorithm that may affect search results.

Google Search & UpdatesRead

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