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SEO, AEO, and GEO Explained Simply

Three acronyms, three different targets. Google's AI Overviews now appear in roughly 60% of US searches, which has created real confusion about what to actually optimize for. Here are all three concepts in plain language, with concrete examples and how to improve each one.

By Bahram Khan July 2026 7 min read

Key takeaway: SEO remains the foundation everything else builds on. AEO targets answers Google displays directly. GEO targets citation by external AI assistants like ChatGPT or Perplexity. All three overlap heavily: well-structured content usually serves all three at once (Stackmatix, 2026).

What is SEO, in plain language?

SEO (Search Engine Optimization) covers the set of techniques that help a page rank higher in classic Google search results, the ones with ten blue links. It's the oldest of the three disciplines, and it remains the base AEO and GEO both build on.

Concrete example
A search for "website design Montreux" that shows an optimized service page in first position, thanks to relevant content, backlinks, and clean technical structure.

To improve SEO: fix technical fundamentals (load time, indexation, URL structure), produce content that actually answers search intent, and earn inbound links from relevant sites. Our SEO audit checklist 2026 covers the 22 priority items.

What is AEO, and how does it differ from classic SEO?

AEO (Answer Engine Optimization) targets the answers Google displays directly on the results page, without the user needing to click a link: featured snippets, position zero, and now AI-generated AI Overviews, present in roughly 60% of US searches as of April 2026 (Stackmatix, 2026).

Concrete example
A search for "how much does a website cost in Switzerland" that shows a box summarizing the answer directly at the top of the page, pulled from a Q&A-structured article.

To improve AEO: structure content in Q&A form with direct 40-60 word answers opening each section, add FAQPage schema markup, and answer the exact question the user typed before expanding on context.

What is GEO, and why is it different from AEO?

GEO (Generative Engine Optimization) targets citation by conversational AI assistants outside Google: ChatGPT, Perplexity, Claude, Gemini. These tools answer in natural language rather than links, and can cite a source without generating a click measurable by Google Analytics.

Concrete example
A user asks ChatGPT "how do I optimize my Google Business profile" and the assistant cites an article directly, without the visitor ever clicking a link to the site.

To improve GEO: publish original, clearly sourced statistics, write self-contained passages that make sense even pulled out of context, allow AI crawlers (GPTBot, PerplexityBot) in robots.txt, and publish an llms.txt file. Full detail in our AI citation guide.

Do you have to choose between the three, or handle them together?

The three disciplines overlap heavily rather than compete. Content with sourced direct answers, clean schema markup, and solid technical fundamentals simultaneously serves classic Google ranking, AI Overview placement, and citation by an external AI assistant. There's no strategy that optimizes for one of the three at the expense of the other two.

01
SEO
Technical fundamentals, relevant content, backlinks. Target: ranking in classic Google results.
02
AEO
Direct answers, Q&A structure, FAQPage schema. Target: featured snippets and Google AI Overviews.
03
GEO
Original sourced data, self-contained passages, AI crawler access. Target: citation by ChatGPT, Perplexity, and other assistants.

Frequently Asked Questions

Has SEO become useless since GEO arrived?
No, quite the opposite, it remains the foundation. Most AI systems (Google AI Overviews, and partly Perplexity and ChatGPT) rely on the existing search index to find content to cite. A poorly indexed, slow site with no clear structure has little chance of being cited by an AI, even with excellent content, because it simply never appears in the results the AI consults.
Do you have to choose between optimizing for SEO, AEO, or GEO?
No, all three overlap heavily and reinforce each other. Well-structured content with direct answers at the top, sourced statistics, and clean schema markup serves classic Google ranking, position-zero placement, and AI assistant citation all at once. There's no such thing as content optimized for only one of the three without benefiting the other two.
What's the concrete difference between AEO and GEO?
AEO targets direct answers displayed by Google itself, like featured snippets or AI Overviews, which now appear in roughly 60% of Google searches in the US. GEO targets citation by external conversational AI assistants like ChatGPT or Perplexity, which answer in natural language rather than links, and can cite a source without ever generating a click measurable by standard analytics tools.

For the technical fundamentals that support all three disciplines at once, see our SEO audit checklist 2026. To go deeper specifically on GEO, see how to get cited by ChatGPT and Perplexity.

About the author

Bahram Khan is a digital marketing specialist and web developer based in Switzerland with 3+ years hand-coding and growing client sites, from luxury hospitality bookings to B2B consulting platforms, no page builders, no subcontractors. Connect on LinkedIn ↗

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