Glossary

    The AEO glossary.

    46 terms from AI search, explained in plain English: what they mean, why they matter, and where to read more.

    A

    AI citation

    A link to your site shown as a source in an AI-generated answer.

    Different from a mention: an assistant can name your business without linking to you, or link to you without recommending you.

    See also: AI mention, AI visibility

    AI crawler

    A bot that fetches web pages for an AI company, either to find sources for live answers or to collect training data.

    Companies run separate crawlers for separate jobs, so robots.txt rules can allow search use while blocking training, or the reverse.

    See also: OAI-SearchBot, GPTBot, PerplexityBot, Google-Extended

    AI mention

    Your brand being named in an AI-generated answer, with or without a link.

    See also: AI citation, Share of voice (AI)

    AI Mode

    Google's conversational search mode, where answers are written by AI and follow-up questions are allowed.

    Like AI Overviews, it draws on Google's search index, and its clicks and impressions are counted in Search Console's Performance report without a separate filter.

    See also: AI Overviews

    AI Overviews

    Google's AI-written summaries shown above the normal results for some searches, with links to supporting pages.

    Sources come from Google's existing index. Google says a page needs to be indexed and eligible to show a snippet; no special markup is required. See how AI Overviews choose sources.

    See also: AI Mode, Query fan-out

    AI SEO

    A loosely used term that can mean classic SEO, SEO done with AI tools, or visibility in AI-led search.

    Because the term is ambiguous, ask which meaning an agency intends. NoorRank uses it only in the third sense, delivered as AEO and GEO. See AI search visibility in Dubai.

    See also: Answer Engine Optimization (AEO), Search Engine Optimization (SEO)

    AI visibility

    How often, how prominently and how accurately a brand appears in AI-generated answers for the questions its customers ask.

    Measured with a fixed set of questions asked the same way over time. See how to measure AI visibility.

    See also: Fixed question set, Share of voice (AI)

    Answer engine

    A search tool that reads sources for you and writes one answer, instead of returning a list of links.

    ChatGPT, Perplexity, Gemini, Claude and Copilot all work as answer engines, and Google behaves like one at the top of many results pages through AI Overviews and AI Mode.

    See also: AI Overviews, Large language model (LLM)

    Answer Engine Optimization (AEO)

    The practice of getting a business named and cited in the answers AI tools write, such as ChatGPT, Perplexity, Gemini and Google's AI Overviews.

    AEO builds on SEO but aims for a place inside the answer rather than a position in a list of links. It covers machine-readable websites, entity clarity, corroboration and content that answers real questions. Read the full guide to AEO. In UAE trade, ‘AEO’ also means Authorised Economic Operator, an unrelated customs programme.

    See also: Generative Engine Optimization (GEO), AI SEO, Answer engine

    Answer-first content

    Writing that gives the direct answer at the start of a page or section, then adds detail.

    Short, specific answers under question-style headings are easy for AI tools to quote.

    See also: Featured snippet

    C

    Canonical URL

    The URL a page declares as its main version, so search engines know which copy to index.

    A common failure is every page declaring the homepage as canonical, which asks search engines to ignore the rest of the site.

    See also: Prerendering, hreflang

    Corroboration

    Independent sources stating the same facts about a business, which makes AI systems more confident naming it.

    In our own experiment, recognition by ChatGPT tracked independent references to the entity rather than the amount of content published.

    See also: Entity, Hallucination

    D

    Digital SoulNoorRank term

    NoorRank's name for the structured, machine-readable definition of a brand: who it is, what it offers, where it operates and what it is an authority on.

    Technically, it is an entity model expressed through structured data (schema.org JSON-LD) and consistent facts across a website and its profiles. AI systems use it to understand and recommend a brand. Building it is NoorRank's specialism; see AEO-ready website development.

    See also: Entity, Structured data

    E

    E-E-A-T

    Experience, Expertise, Authoritativeness and Trustworthiness: the qualities Google's search quality guidelines describe for reliable content.

    Named authors with real credentials, original data and accurate, sourced claims all support it.

    See also: Topical authority

    Entity

    A specific, distinct thing that machines can identify: a business, person, place, product or concept.

    AI systems reason about entities, not keywords. A business becomes an entity when its name, type, location and relationships are stated clearly and consistently.

    See also: Knowledge graph, Entity disambiguation, Digital Soul

    Entity disambiguation

    Making sure AI systems can tell your business apart from other things that share its name.

    It matters most when a brand name is also a common word or another company's name. Our Miracle Berry experiment started from exactly this problem: the name already belonged to a fruit.

    See also: Entity

    F

    Fixed question set

    Also called: Prompt set

    A list of questions written in advance and asked the same way on each AI platform over time, so results can be compared.

    Because AI answers vary between sessions, a single screenshot proves little; the same questions repeated on a schedule do.

    See also: AI visibility

    G

    Generative Engine Optimization (GEO)

    Making content and brands more likely to be cited in answers produced by generative AI.

    The term comes from a 2023 research paper that tested which content changes increased visibility in AI-generated answers; adding citations, quotations and statistics helped, keyword stuffing did not. In practice GEO and AEO describe the same goal. See AEO vs SEO vs GEO.

    See also: Answer Engine Optimization (AEO)

    Ghost AuditNoorRank term

    NoorRank's free diagnostic that shows how AI tools currently describe a business, who they recommend instead, and what is missing.

    It is the first step of every NoorRank engagement. Request a Ghost Audit.

    See also: AI visibility

    Google-Extended

    A robots.txt token that controls whether Google may use your content for Gemini apps and model training.

    It does not affect inclusion in Google Search or in AI Overviews; the snippet controls (nosnippet, data-nosnippet) govern those.

    See also: AI Overviews, robots.txt

    GPTBot

    OpenAI's crawler for collecting data that may be used to train its models.

    Blocking GPTBot is a decision about training; it does not remove you from ChatGPT search, which uses OAI-SearchBot.

    See also: OAI-SearchBot

    Grounding

    Basing an AI answer on specific retrieved sources rather than on the model's memory alone.

    Grounded answers usually show citations. Being one of the grounding sources is what AEO aims for.

    See also: AI citation, Retrieval-augmented generation (RAG)

    H

    Hallucination

    When an AI system states something false with confidence.

    For brands, hallucinations often show up as wrong prices, locations, founding dates or confusion with another business. Clear, consistent facts across sources reduce them.

    See also: Entity disambiguation, Corroboration

    hreflang

    Annotations that link the language versions of a page to each other, such as English and Arabic.

    Without them, search engines may show the wrong language or treat the versions as competing pages.

    See also: Canonical URL

    I

    @id

    A stable identifier in structured data, such as https://example.com/#organization, that lets separate blocks of markup refer to the same entity.

    Referencing one @id for your organisation across every page turns scattered markup into one connected picture of your business.

    See also: JSON-LD, sameAs

    J

    JSON-LD

    The format Google recommends for adding structured data: a block of JSON in the page's HTML, separate from the visible layout.

    See also: Structured data, @id

    K

    Knowledge cutoff

    The date after which a model has no training data.

    Without live search, a model can't know about a business, product or change that appeared after its cutoff, which is why live retrieval and current sources matter.

    See also: Large language model (LLM)

    Knowledge graph

    A database of entities and the relationships between them.

    Google's Knowledge Graph powers knowledge panels; Wikidata is an open knowledge graph many AI systems draw on. Structured data on your site feeds this picture of your business.

    See also: Entity, Wikidata, Knowledge panel

    Knowledge panel

    The information box Google shows for a recognised entity, usually beside the search results.

    Having one is a sign Google treats your business as a distinct entity.

    See also: Knowledge graph

    L

    Large language model (LLM)

    An AI model trained on large amounts of text to understand and generate language, such as the models behind ChatGPT, Gemini and Claude.

    An LLM answers either from what it learned in training or, when connected to search, from pages it retrieves at the time of the question.

    See also: Retrieval-augmented generation (RAG), Knowledge cutoff

    llms.txt

    A proposed plain-text Markdown file at a site's root that summarises the site and links its key pages for AI tools.

    Proposed in 2024; it is not a standard, and Google has said it doesn't use it. Useful as a cheap, low-risk summary. See llms.txt explained.

    See also: robots.txt

    O

    OAI-SearchBot

    OpenAI's crawler for finding pages to show in ChatGPT's search answers.

    OpenAI says sites that block it won't appear in ChatGPT search answers. It is separate from GPTBot.

    See also: GPTBot, AI crawler

    P

    PerplexityBot

    Perplexity's crawler for indexing pages that can appear as sources in its answers.

    See also: AI crawler

    Prerendering

    Generating each page's full HTML ahead of time, so crawlers that don't run JavaScript still see the content.

    Sites built entirely in the browser can look empty to many AI crawlers. Prerendering, or server-side rendering, fixes that. It was the main fix in our own site rebuild.

    See also: AI crawler, Canonical URL

    Q

    Query fan-out

    Google's technique of running several related searches behind the scenes to build one AI answer.

    It is why a page can appear as a source for a question it doesn't rank for directly, and why covering the follow-up questions on a page matters.

    See also: AI Overviews

    R

    Retrieval-augmented generation (RAG)

    A method where an AI system first retrieves relevant documents, then writes its answer from them.

    Most AI search features work this way. For AEO it means your pages have to be findable and readable at the moment someone asks, not only present in old training data.

    See also: Grounding, Large language model (LLM)

    robots.txt

    A file at a site's root that tells crawlers which parts of the site they may access.

    AI crawlers are controlled here by name. Blocking the wrong one can remove you from AI search answers.

    See also: AI crawler, OAI-SearchBot, Google-Extended

    S

    sameAs

    A structured data property that links an entity to its official profiles elsewhere, such as LinkedIn, Wikidata or a directory listing.

    It tells machines these profiles all describe the same business.

    See also: @id, Wikidata

    Schema.org

    The shared vocabulary of types and properties (Organization, Service, Article and so on) used for structured data.

    See also: Structured data, JSON-LD

    Search Engine Optimization (SEO)

    The work of getting web pages to rank in search engine results.

    SEO focuses on relevance, technical health and links. AI tools that search the web lean on pages that rank, so technical SEO is a foundation of AEO, but the goals differ. See AEO agency vs SEO agency.

    See also: Answer Engine Optimization (AEO)

    Share of voice (AI)

    Your share of the brand mentions in AI answers across a set of questions, compared with competitors.

    See also: AI visibility, AI mention

    Structured data

    Also called: Schema markup

    Code that labels facts on a page in a standard vocabulary so machines can read them without guessing.

    Most sites use the schema.org vocabulary in JSON-LD format. Google says it isn't required for AI Overviews, but it helps search engines understand a page. See schema markup for AI search.

    See also: JSON-LD, Schema.org

    T

    Topical authority

    Being treated as a reliable source on a subject because a site covers it in depth across many connected pages.

    See also: E-E-A-T

    W

    Wikidata

    A free, open knowledge base of structured facts about entities, maintained by the Wikimedia community.

    Search engines and AI systems use it as a reference for who and what an entity is. Linking to a Wikidata entry with sameAs strengthens entity identity.

    See also: Knowledge graph, sameAs

    Z

    See what AI says about your business

    The free Ghost Audit shows how ChatGPT, Perplexity, Gemini and Google's AI Overviews describe you today, and who they recommend instead.