AEO and SEO get used interchangeably, but they optimise for two different moments β and confusing them wastes budget. Here's the honest difference and how to invest in both.
What's the difference between AEO and SEO?
SEO (Search Engine Optimization) wins a ranked link on a results page β the goal is position and clicks. AEO (Answer Engine Optimization) wins a mention inside the answer an AI gives β the goal is to be cited, quoted or recommended by ChatGPT, Gemini, Perplexity or Google's AI Overviews. GEO (Generative Engine Optimization) is the same idea, usually used for the broader job across all generative engines.
| SEO | AEO / GEO | |
|---|---|---|
| Goal | Rank a URL on page one | Be cited inside the AI's answer |
| Success metric | Position, clicks | Mentions, share-of-answer |
| What wins | Keywords, backlinks, technical health | Fact density, first-hand expertise, entity authority, consensus |
| Where you compete | The Google results page | ChatGPT, Gemini, Perplexity, AI Overviews |
When does each matter?
SEO still matters because roughly half of searches return classic blue links, and Google's AI Overviews are built on core Search ranking β so strong SEO directly feeds Google's AI answers. AEO matters because the other half of the journey now happens inside AI assistants, where a ranked link is worth nothing if you're not in the synthesised answer.
Do you need both?
Yes β and they're not rivals. AEO is an additional layer on top of solid SEO, not a replacement. Google's own 2026 guidance confirmed that optimising for its AI features is still, fundamentally, SEO. Drop your fundamentals to chase AI and you lose more than you gain; ignore AEO and you go missing from the fastest-growing surface in search.
How to start with AEO
- Get the technical floor right β crawlable, fast, indexable, and not blocking AI bots like GPTBot.
- Restructure key pages answer-first β the buyer's question as a heading, a self-contained answer beneath.
- Build entity authority β consistent schema and a consistent presence across the web.
- Measure prompts, not just keywords β track your share-of-answer across the AI engines weekly.
The quickest way to see your starting point is our free AI visibility check; the full method is our AI Visibility service, and the strategy behind it is in our GEO guide.
FAQ
Is AEO replacing SEO?
No. About half of searches still show standard results, and Google's AI answers run on the same ranking systems as classic Search. AEO extends SEO; it doesn't replace it.
What's the difference between AEO and GEO?
They're close cousins. AEO focuses on winning direct answers and snippets; GEO covers the broader job of getting retrieved and cited across generative engines. Most teams use the terms together.
Which should a small business do first?
Start with the SEO foundation that also feeds Google's AI answers, then layer AEO β answer-first content and entity consistency β on your money pages. They compound.
How do I measure AEO success?
By share-of-answer: define the prompts your buyers ask an AI, run them weekly across ChatGPT, Perplexity and Gemini, and track how often you're cited. That's the metric that matters, not keyword rank alone.