GEO vs SEO vs AEO: the differences and what to do

What each term means

SEO is the oldest and the broadest. It covers everything that helps a page rank in a search engine's list of results: technical health, relevant content, internal and external links, and a clear page experience. The prize is a position in a ranked list, and the measure is rank, impressions and clicks.

AEO is about being the answer. It started with featured snippets, People Also Ask boxes and voice assistants, where a search engine picks one source and reads or shows its answer. It rewards pages that state the answer plainly, near the top, in a form that can be lifted out whole: a definition, a short list, a table, a step-by-step.

GEO is the newest. The term comes from a 2023 research paper on how generative engines choose and present sources. It is about appearing inside an answer a model writes, usually as one of a few named brands or as a cited source. The prize is a mention, and the measure is how often you are named, how you are described and which of your pages are cited.

Where they overlap

Most of the work is the same. An engine can only use a page it can fetch, so crawlability and indexing matter for all three. A page can only be quoted if it says something clear and correct, so helpful, original content matters for all three. And engines lean on sources other sites vouch for, so reputation, links and consistent facts about your brand matter for all three.

Google says as much about its own AI features. AI Overviews and AI Mode draw on the same index and the same quality systems as classic search, and Google's guidance is that the fundamentals of good SEO are what make a page eligible to be shown in them. Clicks from these features are counted in your normal Search Console totals, not reported separately.

That is why a team that already does solid SEO is not starting from zero in AI search. It is also why a team that ignores SEO fundamentals and chases AI tricks tends to be disappointed.

Related reading: AI visibility vs SEO: what changes, what stays the same and How to write a page AI answers will actually cite.

Where they differ

The surface is different. A results page shows ten or so links and the person chooses. A generated answer names a handful of brands, and the person may never click. So the unit you compete for changes from a click to a mention, and winning is less about one page and more about whether the engine considers your brand a credible name for that question.

The result is also less stable. A ranking can be looked up and is the same for everyone in the same place. A generated answer can change between runs, between engines and between people, so a single check tells you almost nothing. Measuring GEO means sampling many answers on a schedule and reporting a rate with its uncertainty, not a rank.

Finally, the useful extra work differs. For GEO it is worth checking that AI crawlers are allowed, that your key facts appear in plain text on pages that engines can read, that third-party sites describe you accurately, and that you are present on the sources engines already cite for your category. For AEO it is writing direct answers and structuring them. For SEO it is the long list of technical and content basics.

What to do first, in order

Start with the shared base: make sure your important pages are indexed, load fast, have one clear title and description each, and answer the question a searcher would actually type. Add an XML sitemap, submit it in Search Console and fix anything the Page indexing report flags.

Then write for the answer. Put the direct answer in the first paragraph under a heading phrased like the question, support it below, and add a short FAQ. This helps classic rankings, featured snippets and generated answers at once.

Then look at the AI surface specifically. Ask the questions your buyers ask in the engines they use and note which brands are named and which sources are cited. Fix factual errors at the source, earn a place on the sources that keep appearing, and track the change over weeks, not days.

How to measure all three without fooling yourself

For SEO and AEO, Search Console is the first-party record: queries, pages, impressions, clicks and position. Check it weekly and judge changes over several weeks, because rankings move slowly.

For GEO there is no equivalent report from the engines, so you sample. Run a fixed set of real buying questions on a schedule across the engines that matter, several times each, and record whether you are named, in what position, with what wording and with which cited pages. Report the rate with its sample size. Add your own logs and analytics to see which AI crawlers fetch your pages and which visits arrive from assistants.

OClever does this sampling and combines it with your Search Console, Analytics and crawler data in one place, so the three views can be read side by side. You can do the same work by hand on a small scale; the point is to use a method that does not mistake one lucky answer for progress.