GEO vs AEO vs SEO: what's the difference for a SaaS founder?
You build a SaaS product. Customers find tools three ways now: they search Google, they read lists and reviews, and more and more they ask ChatGPT, Perplexity, Claude or Gemini “which tool should I use for this?”. SEO (search engine optimization), AEO (answer engine optimization) and GEO (generative engine optimization) are names for winning each of those moments.
Disclosure: we make LazyGEO, a GEO tool. This guide explains the three terms fairly; where LazyGEO fits is in its own section at the end. For the full definitions, see the pillar guide, What is GEO (generative engine optimization)?
What is the short difference between GEO, AEO and SEO?
SEO (search engine optimization) gets your page ranked in a list of search results. AEO (answer engine optimization) gets your page used as the one direct answer to a question. GEO (generative engine optimization) gets your product named inside an answer an AI assistant writes, often by being on other people’s pages.
A simple way to hold it: SEO is about your rank, AEO is about your answer, GEO is about your name. All three start from the same base: pages that search engines can crawl and index, with facts that are clear and true.
Do you still need SEO if you do GEO?
Yes. AI assistants that search the web lean on search indexes: ChatGPT search on Bing, Claude on Brave, Gemini on Google. A page those indexes never found cannot be quoted. Good SEO basics are the entry ticket for GEO, not a separate project you can skip.
Google says it plainly: to appear as a link in AI Overviews or AI Mode, a page must be indexed and eligible to show in Google Search (Google Search Central). For Claude, Profound found results line up with Brave Search (Profound). So check that Google, Bing and Brave all have your key pages.
What does each one look like for a SaaS product?
For a SaaS product, SEO is ranking your site for the terms customers search. AEO is answering their exact questions in clear, short blocks on your pages. GEO is getting into the “best X” lists, comparisons and reviews that AI reads, and keeping your facts consistent everywhere, so the assistant names you.
| SEO | AEO | GEO | |
|---|---|---|---|
| The moment you win | A customer searches “invoicing software for agencies” | A customer asks “how do I bill per API call?” | A customer asks ChatGPT “what’s the best invoicing tool for agencies?” |
| What you work on | Your pages, site speed, links to your site | Question headings with short answers, FAQ blocks | Your facts on your site, plus lists, reviews and comparisons on other sites |
| Pages you control | Most of them | Most of them | Some of them: many quoted pages belong to list authors and review sites |
| How you know it works | Rank and clicks in Search Console | Your answer shows as a snippet or gets quoted | AI answers name you, quoting pages you can see |
| How results behave | Move slowly, fairly stable | Fairly stable | Change from run to run, so you ask many times |
The examples in the first row are made up to show the kind of question; use your own customers’ words.
Which should a small SaaS team do first?
Start with what every channel needs: make sure Google, Bing and Brave index your key pages and that your facts are clear. Then write short answers to your customers’ real questions. Then work on GEO: get onto the lists, comparisons and reviews AI already quotes in your category.
The order matters because each step reuses the one before. A clear pricing page helps SEO, gives AEO a short answer to quote, and gives an AI assistant a fact it can repeat. A comparison page on your own domain helps all three.
For the GEO step, research suggests where to look. In an Ahrefs study of ChatGPT answers to 750 recommendation prompts, “best X” blog lists were 43.8% of the cited page types (Ahrefs). Muck Rack found about 84% of AI citations came from earned, non-paid media (Muck Rack). That is where most of the answer comes from.
How do you know which one is working?
Measure each one where it happens. For SEO, use Search Console rank and clicks. For AEO, check whether your answer is the one quoted. For GEO, ask AI assistants your customers’ questions every week, several times each, and record who gets named and which pages get quoted.
Repeating matters for GEO. SparkToro found the same list of brands came back less than 1 in 100 times across reruns (Search Engine Journal on SparkToro). One good answer is luck; the same answer most weeks is a result.
Are GEO and AEO just new names for SEO?
Partly. They share SEO’s base and many of its habits. What is new is who writes the answer and where it comes from. An AI assistant writes one answer from several pages, many of them not yours, so working on other people’s pages and checking answers repeatedly become core work.
That is also why some advice that worked for SEO does less here. Ranking your own page first does not guarantee the assistant names you; being on the list it quotes often matters more. And files like llms.txt have shown no clear effect on AI citations so far (Search Engine Journal).
Where does LazyGEO fit?
LazyGEO does the GEO step for small SaaS teams: an AI team checks what ChatGPT, Perplexity, Claude and Gemini answer every week, writes comparison pages on your domain, and writes to authors of lists AI quotes. Nothing goes out in your name without a 24-hour window and a Stop button.
It does not replace your SEO. It checks that Google, Bing and Brave have indexed your pages, but it does not rewrite your existing site. Plans are on the pricing page, and the free check shows what AI can read on your site today. For an honest look at how it compares with other tools, see the comparisons. Next, read how to get recommended by Perplexity, Claude and Gemini.