SEO, AEO, and GEO overlap but aren't the same thing. A direct comparison of what each one targets and when each one matters.
SEO, AEO, and GEO all aim to make content discoverable, but they target three different outcomes: SEO targets a ranked position on a traditional search results page, AEO targets being cited as the source for a direct question inside an AI-generated answer, and GEO targets broad visibility and accurate representation across AI-generated discovery generally. They overlap in practice, strong SEO fundamentals support both, but treating them as interchangeable leads to strategies built for the wrong outcome.
All three depend on the same underlying fundamentals: crawlable, well-structured content, genuine expertise, and a site AI systems and search engines alike can actually access and parse. A page that's well sourced, clearly organized, and genuinely useful tends to perform reasonably across all three, which is why none of these disciplines fully replaces the others.
The differences show up in what's being measured and how narrow the competition is:
Platform behavior differs too. Google AI Mode draws from the same index as traditional Google Search, so SEO fundamentals influence it directly, and roughly 97% of AI Overview citations reportedly come from pages already in Google's top 20 organic results. ChatGPT and Perplexity behave differently, drawing on different retrieval and crawling systems, which is why a page can perform well in one AI surface and be invisible in another.
There isn't a universal answer, it depends on where the target audience is actually searching. A business whose buyers still primarily use Google search benefits most from strong SEO with AEO-aware structure layered on top. A business whose buyers increasingly research through AI chat tools, which is now common in B2B software purchasing specifically, needs deliberate AEO and GEO work, not just an assumption that good SEO will carry over automatically.
This is part of AI Search & SEO. For the individual definitions, see what is AEO and what is GEO. For a real, worked example, see AI visibility: from invisible to citable.
Not sure which of these actually matters for your business? Get in touch and I'll give you a straight read.