SEO, AEO and GEO get used almost interchangeably in a lot of marketing content right now, which makes it hard to tell what you're actually supposed to do differently. Here's the distinction in plain terms, without the acronym soup.
The short version
SEO gets your page found. AEO gets your answer read. GEO gets your brand quoted by an AI. They're not competing strategies — they build on each other, roughly in that order.
SEO: winning the ranking
Search Engine Optimization is the foundational discipline: making sure a search engine can crawl, index and rank your pages for relevant queries. It covers technical health (site speed, crawlability, mobile usability), on-page relevance (content depth, keyword targeting, internal linking) and off-page authority (backlinks, brand mentions). Its goal is simple — show up as high as possible on the results page for the terms your buyers search.
AEO: winning the answer
Answer Engine Optimization narrows the target from "rank well" to "be the extracted answer." This covers featured snippets, voice assistant responses, and the short, direct answers that appear above traditional results. AEO content is typically structured with the direct answer stated clearly in the first sentence or two, followed by supporting detail — the opposite of a slow, scene-setting introduction.
GEO: winning the citation
Generative Engine Optimization targets a newer surface: the synthesized, conversational answers produced by tools like ChatGPT, Gemini and Perplexity. Rather than extracting one answer from one page, these tools often blend information from several sources and cite a handful by name. GEO is about making sure your brand earns one of those citation slots — which depends heavily on entity authority and how clearly your claims are stated, not just keyword targeting.
SEO is about being findable. AEO is about being quotable. GEO is about being trustworthy enough for a machine to vouch for you by name.
How the three work together
In practice, these aren't three separate workstreams competing for budget — they share a foundation. Technically sound, well-structured, clearly written content tends to perform across all three simultaneously. The differences show up in emphasis: AEO pushes you to front-load direct answers; GEO pushes you to be more specific and better corroborated by outside sources. Neither replaces solid SEO fundamentals; both are built on top of them.
Which one do you actually need first?
If your site has real technical SEO gaps — poor indexation, thin content, weak internal linking — start there. AEO and GEO improvements on top of a weak SEO foundation tend to underperform. If your SEO fundamentals are solid but you're losing comparison and research queries to competitors, AEO and GEO work is likely your highest-leverage next investment.