What’s the Difference Between AEO, SEO, & GEO?

If you're working on your website, you may hear the same change described as SEO, AEO, and GEO. Add a useful answer to a product page, for example, and someone could reasonably use any of those labels.

These terms describe different goals, but the work overlaps. SEO helps people find you through search. AEO helps your information appear as an answer. GEO helps your content or business appear in answers generated by AI. People often use AEO and GEO for much of the same work, and there isn't an agreed line between them.

What matters is what you want a customer to see and what you plan to improve to make that happen.

SEO, AEO, and GEO Compared

What SEO Covers

Website Content and Indexing for SEO

A customer looking for a bookshop needs to find the right business and decide whether it's worth visiting. Search engine optimization helps search engines understand the website and helps that customer discover what the shop offers.

That can mean technical work, such as making sure important pages can be indexed. It also means providing useful information on those pages. A bookshop's opening hours, location, event details, and ordering options can help someone decide what to do next.

SEO involves more than adding keywords. A page can repeat “independent bookshop” several times and still fail to explain whether the shop stocks children's books or accepts special orders. The words help only when the page answers what the person wants to know.

AI Search Features and SEO Results

SEO also covers more than the familiar list of links. Google treats work on its AI search features as part of SEO. Its AI Overviews and AI Mode use Search systems, so helping people find useful pages still matters when the answer appears in a new format.

You might judge SEO by whether people see your pages in search, whether the right people visit your website, and what useful actions they take there. Which measure matters depends on the page. An event page should help someone find the event and understand how to attend.

What AEO Focuses On

Direct Answers and Featured Snippets

With answer engine optimization, the goal is to help someone get an answer directly from your content. The person may read the answer inside a search result or hear it through an assistant before deciding whether to open a website.

People were working toward this goal before today's generated chat responses. AEO appeared in industry discussions of voice assistants and featured snippets years before the current generative search tools. Google's 2018 explanation of featured snippets described how they help people using mobile and voice search.

A featured snippet shows a useful passage from a page as a prominent answer. Google chooses whether to show one. You can't mark a passage to guarantee it will appear there, and Google doesn't publish a fixed minimum answer length.

AEO for Customer Instructions and AI Answers

For the bookshop, answer-focused work could mean explaining how a customer requests a special order. A useful answer would explain what information the shop needs, how the customer submits it, and what happens next. That explanation helps even when the customer reads it on the website itself.

Today, people also use AEO to describe work aimed at generated answers, so it overlaps heavily with GEO. When someone uses the term, ask which kind of answer they mean. AEO doesn't apply only to voice or short snippets.

GEO and AI-Generated Answers

Content and Citations in AI Answers

Generative engine optimization aims to help your content appear in AI answers. An AI answer may use several sources, compare what they say, and produce a response that fits the user's question.

You can check several things in that answer. A page might supply a fact, get a source citation, or help a business appear in a comparison. Each tells you something different, even when they happen in the same answer.

What the GEO Study Measured

Aggarwal and colleagues introduced GEO in a paper first submitted in 2023 and accepted at KDD in 2024. They studied ways to make source content more visible in generated responses. Their tests included changes such as adding quotations, citations, and statistics.

The paper's much-repeated “up to 40%” gain came from tests of how visible sources were in the answers. It wasn't a forecast of website traffic or sales, and the methods performed differently across subject areas. Adding statistics to a business page won't reliably produce the same result.

How Marketers Use GEO Today

Marketers now use GEO more broadly, and different providers use it to mean different things. Some include content, technical access, brand information, and coverage on other websites. GEO isn't exclusively about training an AI model or building a separate kind of website.

Where SEO, AEO, and GEO Overlap

You can often improve one page in ways that help with all three goals. For example, consider an imaginary independent bookshop with a page about ordering books that aren't on its shelves.

Website Changes That Support SEO, AEO, and GEO

The shop could explain which requests it accepts, what details customers should provide, and how pickup or delivery works. It could put the page where visitors can find it and link to it from relevant product or help pages.

Those changes help people find the page through search. They also give an answer system information it can use to answer a question about special orders. The explanation doesn't need one version for SEO, another for AEO, and a third for GEO.

All three need accurate details, text people can read, information that’s easy to find, and pages they can access. A question heading or a short answer may serve the reader well, but Google doesn't require special AI schema, tiny chunks, or an AI-specific writing style for its generative search features.

Checking Search Results, Direct Answers, and AI Comparisons

What you check depends on the result you want. For a search result, you might check whether the page appears for relevant queries and brings visitors who are interested in what the shop offers. For a direct answer, you might check whether the ordering instructions are correct. For a generated comparison, you might check whether the answer includes the shop as an option and which source it uses for that description.

The same page may succeed in one situation and be absent from another. A source citation shows that the page was used in that answer. It doesn't show that the shop was recommended or that anyone visited it.

Google and Bing AI Reports

Some reports now help you see these differences. Google's Generative AI performance report shows impressions in AI Overviews and AI Mode when enough data is available. Bing's AI Performance reporting covers citations in its supported AI experiences. These reports help you check what appears in AI answers instead of treating every result as a position in a list of search links.

Why Search Access Is Different From AI Training

A search system can find a new page for an answer without waiting for the underlying model to be retrained. Search retrieval finds outside information while the system prepares a response. Training changes what the model has learned from material during its development. The two processes do different things and can have separate permissions.

Anthropic, for example, has a crawler for gathering potential training material, a separate search crawler, and a tool for fetching pages at a user’s request. Blocking one has different consequences from blocking another. Google also lets sites control whether they appear in its AI search answers separately from model training. When someone proposes an “AI access” change, ask which provider it affects, what the tool does, and what the change would allow or block. Allowing every AI bot gives you less control over those separate choices.

Does Your Business Need SEO, AEO, or GEO?

Which Problems Can SEO, AEO, and GEO Address?

The work you need depends on what customers are trying to do and the result you want to improve. If customers can't find your product pages through search, check how those pages appear in search and whether they give customers the information they need. If customers find the website but can't understand an important process, improve that explanation. If relevant generated answers describe your product incorrectly, check that information and the sources behind it.

You may need to work on all of those problems. The label doesn't create a need for separate budgets, duplicate articles, or a second website.

How to Review an SEO, AEO, or GEO Proposal

When you review a proposal, ask what work the provider will do. “GEO optimization” might mean correcting product information, checking crawler access, or measuring responses to a set of buyer questions. Each can be useful, but you need to know which service you're being offered and how it would help with your problem.

Ask how the provider will judge the result, too. A source link, a brand recommendation, a website visit, and an order each show something different. The provider should explain what it plans to check and what that evidence can and can't tell you.

Then compare the proposal with the search and content work you already do. You may need to check how AI answers describe your business. You may need to fix a page on your website that leaves an important question unanswered. Decide what to change and why before choosing which acronym to use.