# Answer Engine Optimisation (AEO): Definition vs GEO > AEO defined: structuring content so a search system can extract it as the direct answer. How it differs from GEO and AI SEO, and what Google documents. Source: https://aiseoperth.net.au/answer-engine-optimisation/ --- Reference # What is Answer Engine Optimisation (AEO)? Author Dorian Menard, founder of Search Scope Published 9 September 2026 Reading time 5 min Answer Engine Optimisation (AEO) is the practice of structuring content so a search system can extract it as the direct answer to a question. It predates generative AI: featured snippets, voice assistants and knowledge panels were the original answer engines. AI Overviews, AI Mode and chat assistants extend the same demand for passages that answer a question plainly, near the top, in a form that stands on its own when lifted from the page. ## Key facts Key facts about Answer Engine Optimisation Fact Detail Evidence What it optimises for Being the extracted answer, or a source the answer is composed from, rather than a ranking position. INFERRED Unit of work The passage, not the page. A section that answers its question in its first sentences is the unit an answer engine lifts. INFERRED Google's controls Google documents nosnippet, data-nosnippet, max-snippet and noindex as the controls over what appears in its listings including AI formats, and says more restrictive settings limit how content is featured. DOCUMENTED Markup Google says no special schema.org structured data is needed to appear in AI features, and that structured data must match the visible text. DOCUMENTED Relationship to GEO and AI SEO Overlapping practices. AEO emphasises the extracted answer; GEO emphasises synthesised, cited answers; AI SEO is the umbrella. INFERRED ## What an answer engine is An answer engine is any search surface that returns the answer instead of, or in front of, the list of pages. The category is older than generative AI. Featured snippets lifted a paragraph from a page into a box; voice assistants read one answer aloud; knowledge panels assembled facts about an entity. Each created the same pressure on content: make the answer extractable. DOCUMENTED Google’s AI Overviews are the current version of that surface on the results page. Google describes them as a “core Google Search feature, like knowledge panels”, which cannot be turned off, shown “when our systems determine that generative AI can be especially helpful”. AI Mode is the conversational version. Chat assistants are answer engines by construction. ## What AEO optimises The object of AEO is the passage. An answer engine does not lift a page; it lifts a section, a sentence or a table, and the sections that get lifted are the ones that stand on their own. The working rules are simple and have not changed since featured snippets: - Put the question in the heading and the answer in the first sentences beneath it. - Keep the answer complete without the surrounding text. A reader who sees only that paragraph should still get the answer. - Use the structure the answer has: a table for a comparison, a numbered list for a sequence, a short paragraph for a definition. - Name the subject explicitly inside the passage rather than relying on the page title to supply it. INFERRED These rules are inference from how extraction works and from long observation of featured snippets. No platform publishes a rule that a passage must be shaped a particular way. ## What Google documents DOCUMENTED Google’s May 2025 guidance for its AI experiences lists the things a site owner can rely on: meet the technical requirements so pages can be crawled and indexed with a 200 status and indexable content; use the preview controls (nosnippet, data-nosnippet, max-snippet, noindex) to set display preferences, noting that “more restrictive permissions will limit how your content is featured in our AI experiences”; make sure structured data matches the visible content; and provide images and video where they help. The same page says the underpinnings of Google’s long-standing advice carry across: “focus on your visitors and provide them with unique, satisfying content”. DOCUMENTED The site-owner documentation adds that no new machine-readable files, AI text files or markup are needed, and that there is no special schema.org structured data for AI features. For AEO on Google this means the preview controls are the only documented levers over what is shown; everything else is content. ## The click question TESTED An answer engine that answers on the page changes what a click is worth. [Pew Research Center’s browsing-data analysis](https://www.pewresearch.org/short-reads/2025/07/22/google-users-are-less-likely-to-click-on-links-when-an-ai-summary-appears-in-the-results/) found that US Google users who encountered an AI summary clicked a traditional result in 8% of visits versus 15% when no summary appeared, and clicked a link inside the summary in 1% of visits. The same study found 88% of summaries cited three or more sources. Being one of those sources is the AEO outcome; expecting the click volume of a classic result from it is not supported by the data. The guide on [AI Overviews and organic traffic](https://aiseoperth.net.au/guides/ai-overviews-organic-traffic/) goes through what to expect. ## AEO, GEO and AI SEO The terms overlap. AEO is the right word when the goal is to be the extracted answer, on any surface that extracts. [GEO](https://aiseoperth.net.au/generative-engine-optimisation/) is the right word when the goal is to be composed into a synthesised answer with citations. [AI SEO](https://aiseoperth.net.au/what-is-ai-seo/) is the umbrella this site uses for both, plus the access and identity work beneath them. A page built to AEO rules is usually the page GEO wants too, because a passage that answers a question cleanly is easier to synthesise from. ## How AEO applies in Perth For a Perth business the practical AEO question is which questions to answer. Local prompts carry a place, so the passages that get lifted for “in Perth” questions are the ones that answer with Perth in them: the suburb served, the regulator, the local condition. A national page that answers the generic question competes for the generic passage; it does not answer the Perth one. HYPOTHESIS Whether Perth business pages are the passages Google extracts for Perth questions, or whether directories and national publishers are, is a question the [planned AI Overviews source study](https://aiseoperth.net.au/research/) is built to answer. It is not asserted here. ## What is documented and what is inferred - **Documented:** Google’s preview controls and their effect on AI formats; no special markup; AI Overviews as a core feature that cannot be turned off. - **Tested:** Pew’s US click figures. - **Inferred:** the passage-level rules; the emphasis distinction between AEO, GEO and AI SEO. - **Not established:** any Perth-specific extraction pattern. ## Related concepts - [ Reference Generative Engine Optimisation The sibling term for synthesised, cited answers. ](https://aiseoperth.net.au/generative-engine-optimisation/) - [ Reference What is AI SEO? The umbrella term. ](https://aiseoperth.net.au/what-is-ai-seo/) - [ Reference Google AI Overviews Google's generative answer surface. ](https://aiseoperth.net.au/google-ai-overviews/) ## Related research - [ Planned study Google AI Overviews Perth Source Study Which Perth prompts trigger an overview and what it cites. ](https://aiseoperth.net.au/research/) ## Sources 1. [Top ways to ensure your content performs well in Google's AI experiences on Search](https://developers.google.com/search/blog/2025/05/succeeding-in-ai-search), Google Search Central Blog, 21 May 2025 (read 9 September 2026) DOCUMENTED 2. [AI features and your website](https://developers.google.com/search/docs/appearance/ai-features), Google Search Central (read 9 September 2026) DOCUMENTED 3. [Find information in faster and easier ways with AI Overviews in Google Search](https://support.google.com/websearch/answer/14901683), Google Search Help (read 9 September 2026) DOCUMENTED 4. [Google users are less likely to click on links when an AI summary appears in the results](https://www.pewresearch.org/short-reads/2025/07/22/google-users-are-less-likely-to-click-on-links-when-an-ai-summary-appears-in-the-results/), Pew Research Center, 22 July 2025 (read 9 September 2026) TESTED On this page - [Definition](#definition) - [What an answer engine is](#what-an-answer-engine-is) - [What AEO optimises](#what-aeo-optimises) - [What Google documents](#what-google-documents) - [The click question](#the-click-question) - [AEO, GEO and AI SEO](#aeo-geo-and-ai-seo) - [How AEO applies in Perth](#how-aeo-applies-in-perth) - [What is documented and what is inferred](#what-is-documented-and-what-is-inferred) - [Sources](#sources) Evidence labels Claims on this page are labelled DOCUMENTED, OBSERVED, TESTED, INFERRED or HYPOTHESIS. [What the labels mean](https://aiseoperth.net.au/methodology/#evidence-labels). Published by Search Scope AI SEO Perth is published by Search Scope, a Perth SEO consultancy founded by Dorian Menard. Search Scope provides commercial SEO and AI search optimisation services; this website is maintained as its specialist Perth AI search research and reference publication. [Search Scope](https://searchscope.com.au/)