AEO vs SEO vs GEO: what's the difference?
AEO, SEO and GEO all help you get found online, but they optimise for different things. Here's a plain-English breakdown of answer engine, search engine and generative engine optimisation — what each one means, when it matters, and how they work together.
AEO (answer engine optimisation) optimises your content to be the direct answer in featured snippets and AI assistants. SEO (search engine optimisation) earns higher rankings in traditional results like Google. GEO (generative engine optimisation) makes your brand the source AI tools such as ChatGPT and Google's AI Overviews cite. Same goal — get found — three different surfaces.
The terms get used interchangeably, which causes confusion and wasted effort. So here's the plain-English version we give business owners. We run all three at our AEO agency, and the short version is this: they aren't rivals, they're layers of the same visibility strategy.
SEO wins the ranking, AEO wins the answer box, and GEO wins the citation inside an AI response. The strongest brands now show up in all three places at once.
The quick answer
If you remember one thing: SEO is the foundation, and AEO and GEO are the newer layers built on top of it. SEO earns the rankings. AEO restructures your content so it can be lifted straight into a featured snippet or read aloud by a voice assistant. GEO shapes how AI answer engines understand and quote your brand. You don't choose between them — you stack them.
Why this matters now: a growing share of searches end without a click, because the answer appears on the results page or inside an AI tool. Ranking first is no longer enough if a snippet or an AI summary is answering the question before anyone reaches your site. That's the gap AEO and GEO close.
What is SEO?
Search engine optimisation (SEO) is the practice of improving a website so it ranks higher in the unpaid, organic results on Google and Bing. You earn the placement rather than pay for it — through relevant content, a fast and well-structured site, and authority signals like quality backlinks.
SEO is the long game, and it's the base everything else sits on. The work spans on-page content, technical health and off-page authority. Done well by an SEO agency, it becomes the lowest-cost-per-acquisition channel most businesses have, because the traffic keeps coming without paying per click. Crucially, AEO and GEO both depend on it: AI and answer engines draw from pages that already rank and demonstrate authority.
What is AEO?
Answer engine optimisation (AEO) is the practice of structuring your content so search engines and assistants can lift a clean, direct answer straight out of it. Think Google featured snippets, the People Also Ask box, and voice answers from Siri, Alexa and Google Assistant. The aim is to be the answer, not just a link in a list.
In practice, AEO means leading with a crisp, self-contained answer to a clear question, then supporting it with structure machines can read — proper headings, concise definitions, FAQ sections, and schema markup. It rewards clarity over cleverness. A page that answers "what is AEO?" in 50 plain words is far more likely to win the snippet than one that buries the answer six paragraphs down.
What is GEO?
Generative engine optimisation (GEO) is the practice of making your brand the trusted source that generative AI tools cite. When someone asks ChatGPT, Perplexity, Google's AI Overviews or Gemini a question, GEO works to ensure your content is what the model pulls from and names in its answer.
GEO overlaps with AEO but goes further. Where AEO targets the answer box on a results page, GEO targets the synthesised answer an AI model generates from many sources. It rewards genuine authority, original data, clear entity signals (so the model knows exactly who you are), and being mentioned consistently across the web. The payoff is being quoted as the expert inside the answer millions of people now read instead of clicking through.
AEO vs SEO vs GEO compared
Here's how the three line up across what they optimise, where they show up, and what wins:
- SEO — search engine optimisation. Optimises for ranking position. Shows up in the classic blue-link results. Wins through content, technical health and backlinks. The slow, compounding foundation.
- AEO — answer engine optimisation. Optimises to be the direct answer. Shows up in featured snippets, People Also Ask and voice results. Wins through clear question-and-answer structure, concise definitions and schema.
- GEO — generative engine optimisation. Optimises to be cited by AI. Shows up inside ChatGPT, Perplexity and Google AI Overviews. Wins through authority, original data, strong entity signals and consistent brand mentions.
- The overlap. All three reward well-structured, genuinely authoritative content. Invest in that base and you make progress on all three at once.
The pattern is clear: SEO gets you eligible, AEO makes you snippable, and GEO makes you quotable. None of them works in isolation — a page with no organic authority rarely gets cited by an AI engine, and a page that ranks but answers nothing cleanly won't win the snippet.
We'll audit your AEO and GEO visibility in a free audit.
A senior strategist reviews where you rank, where you're winning answers, and where AI engines are citing competitors instead of you — then maps the fastest wins. Yours to keep, no obligation.
How they work together
AEO, SEO and GEO aren't competing strategies — they're three layers of one visibility plan, and the work compounds. Strong SEO earns the rankings and authority that make a page eligible to be quoted. AEO structures that same page so engines can lift a clean answer from it. GEO ensures AI tools recognise your brand as the source worth naming. One well-built page can do all three jobs.
That's why we don't treat them as separate budgets. The content you create for SEO becomes the raw material for AEO and GEO, provided it's structured for clarity and backed by real authority. Get the foundation right and you stop chasing each surface separately — you build once and show up everywhere a customer looks for an answer.
Since 2013 we've generated over $650M in attributed revenue for clients by getting them found where it counts. As search splits across rankings, answer boxes and AI engines, the brands that win are the ones present in all three. If you want to be one of them, our AEO team can show you where you stand and what to fix first.
Frequently asked questions
What is AEO?
AEO stands for answer engine optimisation. It's the practice of structuring your content so search engines and assistants can lift a direct answer straight from it — winning featured snippets, the People Also Ask box and voice results. The goal is to be the answer itself, not just one link in a list of results.
What's the difference between AEO and SEO?
SEO optimises to rank higher in traditional search results, earning placement through content, technical health and backlinks. AEO optimises to be the direct answer in snippets and voice results, using clear question-and-answer structure and schema. SEO gets you ranking; AEO gets you chosen as the answer. They work best together rather than as alternatives.
What is the difference between AEO and GEO?
AEO targets the answer box on a search results page — featured snippets and voice answers. GEO (generative engine optimisation) targets the answers AI tools like ChatGPT, Perplexity and Google AI Overviews generate, working to make your brand the source they cite. AEO wins the snippet; GEO wins the citation inside an AI response.
Is SEO still worth it with AEO and GEO?
Yes — SEO is the foundation both depend on. AI and answer engines draw from pages that already rank well and show genuine authority, so without SEO there's little for them to cite. Rather than replacing SEO, AEO and GEO build on it. The smart move is to invest in all three as connected layers of one strategy.
What does SEO, AEO and GEO stand for?
SEO is search engine optimisation — ranking higher in results like Google. AEO is answer engine optimisation — being the direct answer in snippets and voice results. GEO is generative engine optimisation — being the source AI tools cite. All three share one aim, getting your business found, across three different surfaces.