SEO, AEO, GEO and agent readiness: what is the difference?
SEO is about ranking in search results so people click through. AEO and GEO (answer engine and generative engine optimisation) are about being quoted or cited when an AI assistant answers a question. Agent readiness is about what happens next: whether an AI agent can use your site to complete a task, such as buying. The first three earn attention. The last one earns the transaction.
By the Axidort team · Updated
Side by side
| SEO | AEO and GEO | Agent readiness | |
|---|---|---|---|
| Goal | Rank in search results | Be cited in AI answers | Let an agent finish a task |
| Audience | A person choosing a link | A model writing an answer | An agent acting for a person |
| Success looks like | A click | A mention or citation | A completed search, cart or order |
| Main levers | Content, links, technical health | Clear answers, structured data, reputation across the web | Bot access, readable facts, operable controls, tools |
| How it is measured | Rankings, impressions, clicks | Share of AI answers that cite you | Task completion, an agentic score |
What they share
The foundation is the same. Crawlable pages, facts in the HTML, a clear heading structure and accurate structured data help a search crawler, an answer engine and an agent equally. Google’s own advice for generative search is to keep doing what makes content helpful to people. A site with sound SEO is most of the way to being readable by agents.
Where agent readiness goes further
- Access for automation. SEO needs Googlebot let in. Agent readiness needs browser agents and user-triggered fetchers let in, and those are exactly what bot protection blocks. In the Axidort Index, 62% of leading commerce sites challenge a declared agent.
- Actions, not only content. A crawler reads. An agent has to search, select, add to cart and check out. Forms, buttons and checkout flows matter in a way they never did for ranking.
- Exactness. A ranking survives a vague product page. A purchase does not: the agent needs the right price, unit and stock.
- Tools. APIs, MCP servers and WebMCP have no SEO equivalent.
Where to start
- Keep the SEO basics healthy. Everything else rests on them.
- Write pages that answer one question directly at the top, and add structured data. That serves AEO and GEO.
- Then test whether an agent can complete your main task, and fix what stops it. Start with how to measure agent performance.
A site can rank first, be cited by every assistant and still lose the sale because the agent sent to buy was shown a CAPTCHA. That last step is what the Axidort Score measures.
Frequently asked questions
01Is GEO replacing SEO?
No. Answer engines draw on search indexes and on the same signals of quality and reputation, so GEO builds on SEO. What changes is the outcome you measure: citations in answers as well as clicks.
02What is the difference between AEO and GEO?
The terms overlap and are often used for the same work. AEO started with featured snippets and voice answers. GEO refers to generative AI assistants. Both aim to have your content used in an answer.
03Does agent readiness help SEO?
Indirectly. Server-rendered facts, semantic HTML and accurate structured data are good for both. Agent readiness adds work that search ranking does not reward, such as letting declared agents through bot protection.