SEO vs AEO vs GEO: three acronyms, three surfaces, one foundation

SEO, AEO and GEO are not three names for the same job; they are three separate goals standing on one foundation. SEO aims to move your page up the list of results, AEO to have the direct answer to a question built from your sentence, and GEO to have your page cited in the answer a generative engine writes. How much effort each deserves depends on the kind of business and on how its customers search.

The most important row is the last one. The work behind the three overlaps heavily; where they part is in how success is read. Judging GEO by rankings, or SEO by mentions, leads to the wrong conclusion.

Which question lands on which surface?

Three different questions about the same business are answered on three different surfaces. The split is easiest to see by looking at question types:

• For a short service search such as "SEO agency İzmir", the goal is to appear in the results list and the map pack: SEO's territory.
• For a question with a single answer, such as "How long does it take to deliver a website?", the goal is for the answer to be given in your sentence: AEO's territory.
• For a question asking for a recommendation, such as "I want a website built in İzmir — which agency should I work with?", the goal is to be named in the answer a generative engine writes: GEO's territory. It is the first question in our monthly panel.

What do the three have in common?

All three surfaces use the same raw material: pages a search engine or an AI crawler can reach, whose text is in the first HTML response, written clearly and carrying facts that can be checked. A site with a broken technical base neither ranks nor gets quoted; a fast but empty one misses both.

Google says so itself: for its AI features there are "no additional requirements to appear in AI Overviews or AI Mode" (Google Search Central, "AI features and your website", last updated 10 December 2025). The same page says no new machine-readable file, AI text file or special structured data is needed to appear there. On Google's side, then, AEO and GEO are not a layer bolted onto good SEO; they are its continuation.

Engines outside Google do not publish their rules. For them the soundest method available is observation: asking the same questions regularly and recording which pages are cited.

SEO: being in the list

The goal of SEO is for the page that answers someone's query to appear in the results and be clicked. For a local business the most visible part of that list is the map pack, where the Google Business Profile, reviews and consistent address details matter as much as the site itself.

• Technical health: speed, mobile behaviour, crawlability, correct canonical and language tags.
• Query-to-page mapping: each query family has one owner, so two pages never target the same query and weaken each other.
• Internal links: proof pages (case studies, articles) linked to the service pages they support.
• Authority: other sites linking to you and talking about you.

AEO: being the answer

AEO (Answer Engine Optimization) aims to have the direct answer to a user's question — on the results page or in an assistant — taken from your page. Featured snippets, the answer a voice assistant reads out and the question boxes in search results are the typical surfaces.

On these surfaces the user can read the answer in place and leave without clicking. That is why AEO is judged not by clicks but by whether the answer is built from your sentence. The work itself is a writing discipline:

• Put the question in the heading, in the words the user would ask it: "How long does a website take to build?"
• Answer in the first sentence; explanation, reasons and exceptions come after.
• Write each paragraph to stand on its own, readable without reference to another section.
• Keep the FAQ section and its structured data (FAQPage) word for word the same as the visible text.

GEO: being the source

GEO (Generative Engine Optimization) aims to have your brand mentioned, and your page cited, in the answer an AI engine writes. The engine does not copy a single page; it combines what it has read from several sources and writes its own sentence. Our reading of our own measurement — an inference, not a finding — is that two conditions matter: the engine recognising you as one consistent entity, and meeting you in other sources as well.

• Entity consistency: name, address, phone, founder and service description identical everywhere, and the organisation data in the structured data never contradicting the page text.
• Independent mentions: directories, associations, the press and client sites. In our own measurement the engine knew us only from our own site, and named us in no service question.
• Quotable paragraphs: the AEO writing discipline applies here too; the engine must be able to lift a paragraph and use it.
• Crawler access: checking, in the firewall and in robots.txt, that AI crawlers can reach the site.

Our own October measurement shows the split plainly: on the engine we could measure without logging in, we were named in all four brand questions and in none of the twelve non-brand questions we could measure. Asked for us by name, the engine gets facts such as the address, phone and services right — though on the contact question it stopped to ask the user whether they meant a similarly named company in Germany. Asked for a service, it builds the answer from other sources. We attribute the correct facts to the entity work and the absence from service questions to independent mentions that do not exist yet — an inference, not a measurement.

Where do AI Overviews belong?

Google's AI Overviews and AI Mode sit where the two definitions meet. In form they are a direct answer to a question, which is AEO's territory; but a generative model writes that answer and lists its sources, so it is read by GEO's measure. In practice the distinction matters little, because the work for both is the same. What matters is knowing which question you are asking when you measure. "Was the answer built from my sentence?" is an AEO question; "was I named, and which of my pages was shown?" is a GEO one.

Why is the acronym "AEO" ambiguous?

In Turkish search, "AEO" means two different things. In digital marketing it is Answer Engine Optimization; in international trade it is Authorised Economic Operator, called Yetkilendirilmiş Yükümlü Statüsü (YYS) in Turkish law. Of the nine results we recorded for "AEO nedir" ("what is AEO") in September 2026, using a US-located search tool, one described that customs status.

Which comes first for your business?

This section is not a measurement; it is our recommendation, drawn from our own work. The order depends on how your customers look for you:

• A local service business (a salon, a clinic, an agency, a hotel): start with the local part of SEO — the Google Business Profile, consistent address and phone, a separate page for each service. Adding question-led answers to those pages brings AEO with it. For GEO, the first step is directory listings and reviews.
• A business found through informational questions (consulting, training, software): AEO and GEO matter earlier, because customers ask many questions before deciding, and every surface that answers those questions in writing — a snippet or an AI answer — is a way in.
• E-commerce: SEO for product and category pages and product structured data come first; on the GEO side, comparison and guide content does more work.

All three follow the same logic: foundation first, layers after. Investing in GEO before the foundation is in place is like dressing the window of an empty shop.

How can one page serve all three? Our own example

One page can feed all three surfaces. On our own /izmir/seo page we set it up like this: the title and H1 carry the query (SEO); the page has three separate question-headed sections that answer in their first sentence, and a single FAQ structured-data block that includes those questions (AEO); and the structured data links the organisation, the address and the districts we serve (GEO). We describe this as structure, not as a result: the page's ranking and citation outcomes will be measured with Search Console data and our monthly panel, and we will not write a result before we have measured it.

How do you measure which one is working?

• SEO: impressions, clicks and average position in Search Console; locally, the Business Profile insights.
• AEO: checking target questions by hand at regular intervals. Google reports AI Overviews and AI Mode appearances in Search Console not on a separate line but inside the total for the "Web" search type, so Search Console alone cannot separate these surfaces.
• GEO: a fixed question panel. Ask the same questions of the same engines every month and record whether you were named, where in the answer, and which source was shown. A one-off check says almost nothing, because engine answers vary.

A checklist for preparing one page for all three

The list below is what to check before putting a page live. None of the items brings rankings or citations on its own; each one that is missing weakens the page on at least one of the three surfaces.

• The title and H1 carry the page's target query, and no second page targets the same query.
• The page's main text is in the first HTML response and reads with JavaScript switched off.
• Every main question sits in a heading, with its answer in the first sentence below it.
• The FAQ section and the FAQPage structured data carry the same questions and the same answers.
• Organisation name, address and phone are identical in the structured data and on the page.
• The page shows when it was written and when it was last updated, and the date in the structured data matches.
• No number without a source: every figure says where it comes from and which period it covers.
• The page links to the articles that continue its topic and to the case studies that prove its claims.
• AI crawlers are not blocked in the firewall or in robots.txt.

Common mistakes

• Selling GEO as a replacement for SEO. A site with a broken foundation is not quoted properly by any engine.
• Treating llms.txt as a ranking lever. Google writes that its AI features do not need it; the file is only a cheap extra summary for some tools outside Google.
• Measuring once. A question asked one day can come back with a different answer the next.
• Writing the same topic on three pages under three acronyms, producing pages that weaken each other.
• Using the acronym without spelling it out — with AEO in particular, sending reader and engine to the wrong subject.