Glossary

AEO and AI Search Glossary

AI search comes with a lot of new terminology. Here are clear, plain-language definitions of the terms you will hear most, and how each one connects to getting your business found by AI.

AI-era optimization disciplines

The practices for getting found by AI. The industry has not settled on one name yet, so you will see several labels for closely related work.

Answer Engine Optimization AEO: The practice of structuring your website and content so AI answer engines like ChatGPT, Perplexity, and Google AI Overviews can read, understand, and cite your business when people ask questions. Where traditional SEO aims to rank in a list of links, AEO aims to make your business the direct answer. It relies on server-rendered HTML, schema markup, FAQ architecture, and clear, quotable content. See our Answer Engine Optimization service ->
Generative Engine Optimization GEO: A broader view of AEO that looks at your entire digital footprint, not just a single page. GEO is about making every signal AI engines pull from consistent and credible: brand mentions across the open web, third-party articles and press, customer reviews, directory listings, and authoritative citations. AI tools synthesize from across the web, so GEO makes sure the whole picture of your brand is easy for generative engines to find and trust. See our Generative Engine Optimization service ->
AI Optimization AIO: Another name for the same core practice as AEO and GEO: structuring your content so AI systems can find, understand, and cite your business. AIO is a general umbrella term you will see used interchangeably with the others. We use AEO because it parallels SEO and most clearly describes what we are optimizing for. AEO, GEO, AIO, LLMO: are they the same? ->
Large Language Model Optimization LLMO: The most technical layer of AI-era optimization. LLMO focuses on how the language models behind ChatGPT, Gemini, Copilot, and Claude learn about, interpret, and represent your brand inside their training data and retrieval systems. The work includes unambiguous schema markup, entity disambiguation, Knowledge Graph and Wikidata presence, and visibility in the high-signal sources models lean on most. Where AEO is about the page and GEO is about your web footprint, LLMO is about being legible to the models themselves.

Visibility and outcomes

What success looks like once the foundations are in place: being seen, being chosen, and being quoted by AI.

AI Visibility: How likely your business is to appear when an AI tool synthesizes an answer to a relevant question. High AI visibility means your business shows up inside the answer, not buried in a list of links beneath it. It comes from structured data, verified citations across the web, Google Business Profile alignment, and content written around the questions your customers actually ask. Get an AI Visibility Assessment ->
AI Discoverability: The degree to which an AI system can find you, verify you, and choose to reference you. It depends on three things working together: a readable, well-structured website, consistent citations across the web, and business entity data that matches across every source. A mismatch between your website and your Google Business Profile, for example, lowers an engine's confidence in citing you. How we build AI discoverability ->
AI Citation: When an AI answer engine references or names your business as a source in its response. Citations are the core currency of AEO: they are how customers discover you through ChatGPT, Perplexity, and Google AI Overviews without ever visiting a search results page. Earning them depends on clear, quotable content, structured data, and verifiable authority signals across the web.

Technical foundations

The machine-readable groundwork that lets AI engines identify your business and trust what it says.

Entity SEO: Optimizing around your business as a defined entity (a specific organization, person, place, or thing) rather than around isolated keywords. The goal is to help search and AI systems recognize who you are, what you do, and how you relate to other entities, so they can confidently connect queries to your business. It leans on schema markup, consistent business facts, and presence in knowledge bases like Wikidata.
Knowledge Graph: A structured map of real-world entities (businesses, people, places) and the relationships between them, used by search engines and AI systems to understand the world. Appearing accurately in knowledge graphs, including Google's Knowledge Graph and the open Wikidata project, is one of the strongest signals that you are a real, citable entity. It helps AI tell your brand apart from similarly named businesses.
Schema Markup: Structured data code, based on the shared schema.org vocabulary, added to your pages so machines can read exactly who you are, what you offer, where you are, and what questions you answer. Schema markup is foundational to AEO: types like Organization, LocalBusiness, FAQPage, Service, and Product turn ordinary page content into facts AI engines can parse without guessing. Check your site's schema with a free AEO Score ->

Where AI answers appear

The surfaces your customers now use instead of scrolling a page of blue links.

AI Search: The broad shift from typing keywords into a search box and scrolling links to asking AI tools a question and getting a direct, synthesized answer. AI search spans ChatGPT, Perplexity, Google AI Overviews and AI Mode, Gemini, and Copilot. It changes the goal of a website from earning a click to earning a citation inside the answer. See how your site performs for AI search ->
AI Overviews: Google's AI-generated answer box that appears above the traditional blue links for many searches. Google pulls from multiple web sources, synthesizes an answer, and serves it before the user scrolls. If your content is not structured for AI to read and extract, you can be invisible in that box even when you rank on page one organically. Read: Google AI Overview, AI Mode, and Gemini explained ->

Now see where your business stands

Knowing the terms is step one. Our free AEO Readiness Score checks 10 technical signals and tells you exactly how visible your site is to AI answer engines today.

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