Until a few years ago there was one way to find a business: search on Google. Today a large share of customers ask the same question to ChatGPT, Gemini or Perplexity: "Can you recommend a good makeup studio in Porto?", "Which clinic is reliable for teeth whitening?" The answer is not a list, it is a few sentences. You are either inside those sentences or you are not.
GEO, Generative Engine Optimization, is the name of the work that gets you inside those sentences.
A short definition
GEO is the set of practices that make a brand get mentioned, described correctly and cited as a source in the answers of AI-powered search engines and chat assistants. SEO aims at ranking on a results page; GEO aims at being part of the answer the AI writes.
The difference between SEO and GEO
They are not rivals, one continues the other. AI models learn who to recommend largely from the web. A site without a solid SEO foundation rarely becomes visible in GEO. Still, the two measure different things:
- SEO measures rankings, clicks and visits. Its question is: "What position am I in?"
- GEO measures mentions, accuracy and citations. Its question is: "Does the AI talk about me, does it get me right, does it point to me as the source?"
A business can rank first on Google and never appear in AI answers. The opposite is also possible.
How does an AI pick a brand?
When a model answers, it looks at three things: how much consistent information about the brand exists on the web, how clear and structured that information is, and whether trusted sources mention the brand. If your services are described vaguely, your address is written three different ways in three places, or the only source talking about you is your own site, the model either skips you or gets you wrong.
Why being described correctly matters as much as being visible
Being mentioned is not enough. If the AI quotes an old price, leaves out a service or gives the wrong address, that answer brings complaints, not customers. That is why GEO work has two legs: visibility first, accuracy second. You can manage neither without measuring.
Where to start
- Measure where you stand. Ask AI assistants ten questions about your industry and note how often you are mentioned and how you are described. To do this regularly, use a measurement tool such as Messgeo.
- Create one source of truth. Services, price range, address, opening hours and contact details should be clear, current and written one way on your site.
- Write content that answers questions. Turn the questions your customers really ask into headings and give short, definite answers. AI likes sentences it can quote.
- Grow your external footprint. Industry directories, local guides, press and customer reviews widen your brand's consistent trail on the web.
- Measure and fix regularly. GEO is not a one-off task; answers change as models update.
In short
The shape of search changed, the rule of being found did not: the clear, the consistent and the trusted win. GEO is presenting those three qualities in a form AI understands. First learn where you stand, then close the gaps in order.