SEO (search engine optimization) earns your firm a position in a list of links. AEO (answer engine optimization) earns your firm a mention inside the written answer that now sits above, or entirely replaces, that list. The foundations overlap, but the goals, tactics, and measurements differ in ways that matter for law firms.
What is the core difference?
What carries over from SEO?
Most of the foundation. A technically healthy website, pages organized around what clients look for, genuine reviews, consistent name and address across listings, and mentions on reputable legal sites all help both. If your firm has invested in serious local SEO, you are not starting from zero on AEO. The signals AI tools weigh are largely the same signals, read by a different kind of machine.
What actually changes with AEO?
Three things change in emphasis, not in kind:
- Page structure. SEO tolerates long pages that cover a topic broadly. AEO rewards one clear question per page with a direct answer in the first sentences, because that is what an AI tool can lift into its answer.
- Where you want mentions. SEO values links for ranking power. AEO values mentions on the specific sources AI tools cite in your market, whether or not they pass traditional link value.
- Measurement. Rankings and traffic stop telling the whole story. The question that matters becomes "when a client asks the AI tools for a lawyer like us, do they say our name". That is checkable, repeatable, and trendable.
How should a law firm split its effort?
If your basics are weak (site issues, inconsistent listings, few reviews), fix those first; both disciplines depend on them. If your basics are solid, put new effort into AEO-shaped content: question pages with direct answers, structured data, and a monthly check of what ChatGPT, Google's AI results, and Perplexity actually say about firms in your market. Most firms have years of SEO habit and zero AEO habit, so the marginal gain from the first months of AEO work is usually larger.