AEO (answer engine optimization): definition and difference from GEO

What is AEO?

AEO, short for answer engine optimization, targets the answer that a search engine displays itself, and not only the list of links.

The term has no standard definition. Microsoft Advertising gives another one, focused on assistants, and several vendors have made it the name of a software category. For Elev8 Lab, AEO covers the same work as the one described in our guide to GEO.

What is an answer engine?

An answer engine answers the question instead of returning a list of pages. At Google, that is the role of the featured snippet.

Google Search Help describes it as a box shown at the top of the results, with an excerpt from a website that answers the question. It also appears in “People also ask” and next to Knowledge Graph information.

AI Overviews, launched in France on July 22, 2026 together with AI Mode, are the most visible example. ChatGPT, Perplexity and Copilot work as AI search engines: they write an answer from several sources.

Where does the term AEO come from?

No primary source dates the first use of “answer engine optimization” or names its author. The pages ranking for “aeo” in France on October 19, 2026 mostly link the term to direct answers and voice search. The dates that can be verified are recent.

Among the sources gathered here, the first official documents that use the acronym date from December 2025 (Microsoft Advertising) and May 2026 (Google).

AEO or GEO: what is the difference?

For Google, there is none: AEO and GEO describe the same work, and that work is still SEO. Microsoft Advertising tells them apart. Tool vendors use one or the other depending on their product.

The Microsoft Advertising guide to AEO and GEO illustrates the gap with a rain jacket. SEO targets the query “Waterproof rain jacket”. AEO provides a detailed product description. GEO adds proof: a magazine rating, 180-day returns, a 3-year warranty, a 4.8 rating. Microsoft presents SEO and catalogs as the foundation to build on.

The pages that rank the two terms contradict each other: some make GEO a component of AEO, others make AEO a lever of GEO.

What about SEO?

Both disciplines share the same foundation: a page must be crawled, indexed and judged useful before it is reused in an answer. Google sets no additional requirement to appear in AI Overviews or AI Mode. The unit of success changes: a citation or a mention in an answer, rather than a ranking and a click. Measurement changes too. The full comparison is in our article on the differences between GEO and SEO.

What does Google say about AEO?

Google does not treat the term as a discipline of its own. Its guide says so in one sentence: “From Google Search’s perspective, optimizing for generative AI search is optimizing for the search experience, and thus still SEO” (original English wording; the French version of the guide leaves out “still”).

The announcement post of May 15, 2026 presents the guide as a way of mythbusting common “AEO/GEO” misconceptions. In it, Google asks site owners to prioritize effective SEO strategies over “AEO/GEO hacks”: chunking content, AI text files such as llms.txt, inauthentic mentions. The table of outdated advice below goes through these practices one by one.

What Google asks for instead: “non-commodity” content, unique and expert-led, that does not recycle what others have already published.

To anyone considering buying “AEO” advice or services, the guide recommends reviewing Google’s guidance on evaluating an SEO provider.

What Microsoft recommends

Microsoft Advertising is more prescriptive. In a post of October 8, 2025, Krishna Madhavan (Microsoft Bing) explains that Copilot breaks content down into structured pieces, evaluates them, then assembles its answer. He recommends answers of one to two sentences, lists, tables, question and answer blocks, and sentences that make sense out of context.

On chunking, the two documents diverge: Microsoft recommends self-contained passages, Google considers chunking pointless.

Which AEO advice is outdated in 2026?

Six common recommendations no longer hold up against Google’s documentation as of October 19, 2026.

A visible FAQ is still useful to the reader. Structured data remains useful for the rich results that are still shown.

How do you work on AEO in practice?

The work starts from SEO, then makes each page easy to reuse and cite. Four steps frame the work.

1. Secure the SEO foundation: check that your pages are crawled and indexed; Google adds no requirement for AI Overviews.
2. Answer at the top of each section: place under each heading an answer of one or two sentences that makes sense out of context.
3. Bring your own information: publish data, examples and expertise that others have not already written.
4. Get cited by credible third parties: aim for authentic mentions of your brand; Google dismisses fabricated mentions.

Each step is covered in detail in our method for getting cited by AI.

How do you measure AEO?

Since June 3, 2026, Search Console has offered generative AI performance reports for Search and Discover. They have been rolled out to all websites worldwide since August 31, 2026. They show impressions, pages, countries, devices and dates. The launch post mentions neither queries nor clicks. These impressions are still counted in the overall performance report.

Vendors sell “AEO” tools that track a brand’s presence in assistants. As of October 19, 2026, HubSpot AEO, in beta, covers ChatGPT, Gemini and Perplexity for $50 per month, with 25 prompts included (US page).

The metrics and the tracking protocol are covered in our article on how to measure your AI visibility.