SEO GEO and AEO compared
Which search needs which optimisation?
SEO, GEO and AEO differ mainly in how they approach search results and answers. SEO stands for search engine optimisation. GEO focuses on generative answers. AEO describes optimisation for answer systems, with its scope defined differently by different providers.
For your planning, the specific task therefore matters more than the abbreviation. Do you want to improve the discoverability of your website, understand how your brand appears in AI answers or make a particular information question easier to answer?
I see GEO as an extension of SEO. Your existing search strategy remains a foundation. Additional observations should clearly show which question they answer and where their limitations lie. A new acronym alone is no reason to replace established content or launch a separate programme of measures.
What distinguishes SEO GEO and AEO?
SEO, GEO and AEO are working terms with overlapping meanings. Before making a decision, clarify which systems and results you mean.
| Term | Focus in this comparison | Possible working question | Observation |
|---|---|---|---|
| SEO | Discoverability in search engines | Which page matches a relevant search question? | Development in the selected search context |
| GEO | Representation in generative answers | Is the brand mentioned or is content used as a source? | Mentions and source citations recorded separately |
| AEO | Clear answers for answer systems | Which question should the content answer directly? | Result in the specifically named system |
This is a practical framework for planning. AEO does not have a universally identical definition. Some use the term for direct answers; others use it for a broader area of AI search. In a proposal or strategy, I would therefore ask about the actual system and objective.
GEO should not be treated as a single standard metric either. A report on mentions in one system answers a different question from an analysis of website visits from another. The label needs to be tied to a described method.
My own focus includes GEO as an extension of SEO, citability and mentions, and agentic processes. The expertise pages explain this perspective. For your business question, I would first identify the desired outcome and the foundation already in place.
The terms can then help clarify responsibilities. Editorial and website teams can work on content. Observing answers needs its own framework. Which task makes sense first follows from the specific starting point.
If a provider lists SEO, GEO or AEO as a service, I would ask about the specific scope of work. Which pages will be reviewed? Which information will be edited? Which system will be observed? The answers should also explain who supplies the necessary foundation and how a change will be documented.
Another question concerns the metric. What counts as a mention, and what counts as a source citation? Which questions were selected for observation? Is a result reported as a single answer or as a repeated observation? Without this context, the same term can mean different things in two analyses.
For budget planning, I therefore recommend comparing the actual work. An editorial assignment and an observation report can both be useful, but they serve different purposes. The decision should show which contribution your business needs now and what is already available from existing work.
Why SEO and generative search are connected
SEO and generative search are connected in planning because both work with information about your business. Your website should therefore make its offering and professional statements understandable.
Google Search Central describes its generative search features as built on its existing ranking and quality systems. SEO fundamentals remain relevant for Google. Google also lists indexability with an eligible snippet and inclusion in generative search features through Search Console as prerequisites. This does not guarantee that a page will appear. These operator statements apply to Google Search; they cannot be extended indiscriminately to other answer systems.
For a content decision, I recommend reviewing existing pages against their specific purpose. Do they answer the relevant question? Is the actual offering clear? Does business information agree across different pages? Simply trying to fit in more keyword variants does not answer these questions.
A distinct professional statement can be based on personal experience or supported by a source. Its origin should remain identifiable. This is an editorial quality decision that also makes your content easier for human readers to understand.
The paper GEO: Generative Engine Optimization by Aggarwal and co-authors studies changes in visibility within a described research framework. I do not turn its findings into a performance guarantee for current client projects. A measure must be tested in the actual system and against its own method.
How do citations and mentions differ?
A source citation and a mention show different relationships to a business. An answer can name your brand without linking to your website. It can also link to content without highlighting the brand in its text.
I recommend documenting these observations separately. For a source citation, the link destination and context matter. For a mention, how the business is described matters. A visible name alone does not tell you whether the description is accurate.
I use citability to describe how suitable a piece of content is as a verifiable source for a specific statement. This differs from a measured source citation. A page can be professionally suitable and still fail to appear in an observed answer.
For planning, this creates a clear distinction: we can make information more precise. We can observe whether it is cited. Selection by the system remains a separate decision whose individual causes may not be fully visible from outside.
What should you check first?
First, clarify the decision a new search measure should support. Without this question, a long list of possible adjustments is hard to prioritise.
I would structure the starting point as follows:
- Describe the offering and the relevant customer question.
- Assess the existing page and its professional information.
- Name the system and result you want to observe.
- Document the starting point and the assumption behind a change.
- Review the result later within the known limitations of the method.
When observing AI answers, the question and time should be defined. Mentions and sources are recorded separately. Errors in the description also deserve their own entry. A repeated observation is easier to interpret than an isolated screenshot.
For content, an initial task may simply be resolving contradictory business information. A new page should answer its own information question and fit the offering. The possible tasks must be manageable with the people and resources available in the business.
This sequence is a recommended planning approach. A particular business may need a different starting point, for example where the technical website foundation or content ownership needs to be clarified first.
When making a change, retain the starting point. I recommend noting the statement concerned and the purpose of its revision. This makes it possible to review later whether the new content actually answers the intended information question more clearly. That editorial review remains separate from observing a system.
A lack of change also deserves a factual assessment. It can mean that the assumption has not yet been confirmed. On its own, however, it does not reveal the individual cause. The next task should follow from the known framework and, where necessary, test an additional question. Planning can then keep learning without retrospectively turning an observation into a guaranteed effect.
Where the limitations of optimisation lie
The limitations lie in selection and presentation by the respective system, and in what the observation can tell us. Better-described content is not a promised AI citation.
Google Search Central explains that its generative search features do not require a special AI file, special markup or an ideal page length. I would therefore not offer such measures as a general promise for Google. For other systems, a specific purpose would need separate evidence.
Metrics also need their context. Comparing observed answers shows a sample. Without further evidence, it does not establish a complete market effect or a direct change in revenue.
I recommend keeping these limitations visible in planning. A testable assumption is more helpful than a guarantee whose conditions nobody can follow.
What you can take into your decision
For your decision, first identify the system, question and expected result. You can then clarify which existing SEO work should continue and which new observation should be added.
If you want to assess a search strategy or how your brand is represented, Expertise outlines my professional background. Through Contact and initial consultation, we can discuss your specific starting point.
You can bring a relevant page or a single observed answer to the conversation. We will put the example into the context of the specific question and decide which further information is needed for a more reliable assessment.
Further reading: Agentic Search, About.
Sources
- Google Search Central guide to generative AI in search (new tab)
- Aggarwal et al., GEO: Generative Engine Optimization, version 3, 2024 (new tab)
Sources checked on 8 October 2026.
