What Is GEO? Generative Engine Optimization vs AEO vs SEO

In short: SEO is the work of earning visibility in traditional search results. AEO (answer engine optimization) is shaping content so a search feature or assistant can lift a direct answer from it. GEO (generative engine optimization) is the same aim applied to AI systems that write their own answers, such as ChatGPT, Perplexity and Google's AI Overviews. The three overlap heavily, and the work that helps one mostly helps the others.

Key Takeaways

• The terms are industry labels, not separate disciplines with separate rulebooks. Treat them as three views of one job: be the source a search system trusts and can quote.
• Google's own documentation says there are no additional requirements to appear in AI Overviews or AI Mode, and no special optimization is necessary. A page must be indexed and eligible to show with a snippet.
• Google also says you do not need new machine-readable files, "AI text files" or special schema.org markup to appear in these features.
• What changes with AI answers is what you are measured on. Rankings and clicks matter less than whether you are named, cited and described correctly.
• Strong foundations carry most of the weight: crawlable pages, clear answers, accurate facts and consistent information about your business across the web.
• Nobody can guarantee a citation. Treat any agency that does with suspicion.

The Three Terms, Side by Side

What Google Actually Says

Because Google sits behind the largest share of search, its documentation is the best starting point. On the page about AI features and your website, Google states that:

• There are no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary.
• To be a supporting link, a page must be indexed and eligible to be shown in Google Search with a snippet.
• You do not need to create new machine-readable files, AI text files or markup, and no special schema.org structured data is required.
• Traffic from AI features is included in the overall Search Console data, under the Web search type.
• Being indexed and served is not guaranteed.

The practical reading is that classic SEO hygiene is the entry ticket for Google's AI features. Anyone selling a secret AI-only trick for Google should be asked to point to evidence.

What Is Different About AI Answers

Even if the entry requirements are the same, the experience for the reader is not.

1. The answer often comes first. A reader may get what they need without visiting any site, so being cited as a source matters even when a click does not follow.
2. Several sources are blended. The system picks passages that answer the question clearly, so pages that bury the answer lose out.
3. Results vary. Ask the same question twice or on a different system and the sources differ. Google notes that AI Overviews and AI Mode may use different models and techniques, so what they show will vary.
4. Mentions without links count. Being recommended by name in an assistant's reply can influence a buyer even with no link.

Our earlier post on where AI answers get their sources looks at why listings and third-party pages matter as much as your own site.

A Practical Order of Work

1. Fix the foundations. Make sure important pages can be crawled and indexed, load quickly and put key content in text. This serves SEO, AEO and GEO at once.
2. Answer real questions plainly. Put a short, direct answer at the top of each page, then the detail. Use the wording your customers use.
3. State facts clearly and consistently. Services, locations, prices where you can share them, opening hours and credentials should match everywhere you appear.
4. Show evidence. Named sources, dated figures and real examples are easier to cite than claims.
5. Add FAQs where there are real questions. Keep structured data accurate and matching the visible text. It helps machines read the page, even if Google says it is not required for AI features.
6. Check what AI says about you. Ask the questions your customers ask, on several systems, and record what comes back. See our guide to measuring AI search visibility.
7. Decide your crawler policy deliberately. Our post on AI crawlers and robots.txt explains the choices.

What to Be Careful About

• Guarantees. Nobody controls what an AI system writes.
• Tricks. Hidden text, fake reviews and mass-produced pages carry the same risks as before, and may be worse in a system that summarises.
• Metrics. A drop in clicks is not always a drop in influence. Track mentions and citations as well as traffic.

The Short Version

GEO, AEO and SEO are three names for the same direction of travel: make it easy for systems and people to find, understand and trust your answers. Start with sound SEO, write answers plainly, keep your facts consistent, and measure whether AI systems name you.

If you want help with this, see our answer engine optimization service and our answer engine optimization whitepaper.

Related Insights

• AI Overviews and Fewer Clicks: What Google Actually Says You Need to Do
• Where AI Answers Get Their Sources, and Why Listings Matter as Much as Your Site
• What Is AI-Native Search?

Sources

• Google Search Central, AI features and your website, read November 3, 2026