A prospect asked ChatGPT for the best marketing help near Worcester last month. The answer named three companies. If you have been doing SEO for years, here is the uncomfortable part: ranking on Google did not guarantee a spot in that answer.
That is the difference between SEO and AEO in one scene. Both matter. They are not the same job.
What SEO does
Search engine optimization earns you a position in a list of links. Google crawls your site, weighs your content against everyone else who wants the same query, and ranks you. The person searching does the last step themselves: they scan the results, click, compare, and decide.
The work is familiar. Fast pages, clear service and location pages, content that matches what people search for, reviews, links, a tidy Google Business Profile. SEO compounds. It is still the base layer of getting found.
What AEO does
Answer engine optimization earns you a place inside the answer itself. When someone asks ChatGPT, Perplexity, or Google AI Overviews a question, the engine does the comparing for them and hands back a synthesized answer with a handful of sources. There is no page two. Often there is no click at all.
The engine is not ranking you. It is deciding whether to quote you.
The real differences
Three shifts matter more than the rest:
- Lists become answers. SEO wins a slot among ten blue links. AEO wins a mention inside one paragraph. Fewer winners, higher stakes per query.
- Keywords become questions. People type fragments into Google and speak full questions to AI. Content that answers a specific question in the first two sentences gets quoted. Content that warms up for four paragraphs does not.
- Rankings become reputation. Answer engines lean on entities: who you are, what you do, where you operate, and whether other credible sources agree. Consistent mentions, reviews, and structured data feed that reputation.
What stays the same
The overlap is bigger than the hype suggests. Real expertise, written clearly, organized so a machine can parse it. Clean headings. Pages that answer one question well instead of ten questions badly. Accurate business data everywhere your name appears. If your SEO was built on substance, you are most of the way to AEO already.
If it was built on tricks, both systems will eventually price that in.
What to do about it
A short list you can act on this quarter:
- Rewrite your key pages so the direct answer sits in the first two sentences, then earn the detail below it.
- Add FAQ and service schema so engines can read structure, not just prose.
- Tighten your Google Business Profile and your citations. Same name, same services, same city, everywhere.
- Publish answers to the questions buyers actually ask on calls. One question, one page or one section.
- Check your analytics for AI referral traffic. It is small today. It is not staying small.
SEO gets you found in the list. AEO gets you named in the answer. The businesses that treat them as one connected system will take both.
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