Generative Engine Optimization: what it actually means for an SME

What is generative engine optimization, exactly?

Generative engine optimization, or GEO, is the work of structuring a site so that a generative engine — ChatGPT, Perplexity, Google's AI Overviews, Copilot — can read it, understand it, and name the brand when answering a user's question.

That is the whole definition. The rest, the part a marketing director cares about, is not the definition but the evidence. Does the machine name your brand today, on which questions, from which pages, and does that move when something on the site is fixed?

Google says as much in its own developer documentation: classic SEO good practice — useful content, a clear technical structure, up-to-date local and e-commerce data — remains the foundation for appearing in its generative features (Google Search Central). This is not a separate discipline that replaces the rest. It is one more layer, with its own rules of reading.

Why it smells like a buzzword, and why that is partly deserved

The term is young, and most of the literature around it is generic guides, online certifications and lists of good practice with no measurement attached. One mainstream article on the subject recommends long-tail keywords and a conversational style to help models understand content better (Coursera), which is plausible but unverifiable as long as nobody shows the before and after on a real case.

That is exactly the problem for a marketing manager who has already received two SEO audits with no follow-through. You get described a method, never a result measured against a known starting point.

We do not defend the category. We show it. Ask the question your own customer would type, in their language, without naming your brand, and read who the machine names instead. A competitor's name in that answer is more convincing than ten minutes explaining what GEO is.

What we actually measure: 25 frozen questions, four readings a month

At HARGILE, GEO is not a concept, it is a protocol. Twenty-five questions, frozen at subscription for a given client market, read four times a month on ChatGPT, Perplexity, Google's AI Overviews and Microsoft Copilot. Gemini and Claude are available as a paid option, not subscribed by default.

What we measure is who the machine names when nobody types your name. Not an internal score presented as progress: that kind of score is unstable even between two identical readings taken the same day on the same site. What we look at is the answers themselves, and the source pages behind those answers, page by page — the ones that name the brand and the ones that do not.

The link to Google: the foundation, not a separate option

One figure keeps coming back across several independent measurements, not just one: between a third and a little over half of the addresses cited by answer engines come from the top of Google's rankings, and that link weakens over time. Five independent measurements land in that range, between 38 and 60.46 per cent depending on the study.

In practice, that means there is no GEO formula that ignores the Google work. With us, the Google work is delivered inside the same package, as the technical foundation, and has not been sold on its own since 11 September 2026. We improve your organic search: on Google, and on answer engines. It is the same job.

To understand what AI Overviews already change for an SME's traffic, before even talking about ChatGPT or Perplexity, see our article on the impact of AI Overviews on traffic.

What GEO is not, and what nobody can guarantee you

GEO is not the end of classic SEO, and Google still holds well over 90 per cent of searches. The question "is SEO dead because of AI" comes up often in related searches. The short answer: no — traffic volume from generative engines is still low today, around 1 per cent.

What nobody can honestly promise you: a guaranteed position, on Google or on an answer engine, a guaranteed volume of traffic, or a guaranteed citation on ChatGPT or Perplexity. Anyone who promises it is lying, or has not understood how these engines work.

What we guarantee instead is the dated log of what was changed on your site. Others tell you what to fix. We fix it, and we freeze your starting figures before touching the site. Commitments in this market run from three to twelve months; we are at the floor.

How to tell it apart from a tracking tool bought on its own

You can buy an AI visibility tracking tool on its own. It exists, and it gives you a list of cited domains without telling you what to do about it. The difference is not in collecting the data, it is in reading it. A badly configured competitor set, a truncated collection day, a filter forgotten on half the questions: three real errors observed on a single client account, each capable of throwing the indicator off completely.

What we sell is not the dashboard. It is the sorting, the correction, and not leaving you to comment on noise.

FAQ

Does GEO replace SEO?

No. Google still holds well over 90 per cent of searches, and its own developer documentation states that classic SEO good practice remains the foundation for appearing in its generative features. GEO adds to the Google work; it does not replace it.

Are GEO and answer-engine optimization just marketing with no substance?

They can be, if nobody shows a measurement. The proof is not in the definition of the term, it is in the demonstration: ask the question your customer would type, without naming your brand, and read who the machine names instead. At HARGILE, that reading is done on 25 frozen questions, four times a month, across four engines, with the source pages identified page by page.

Can a citation on ChatGPT or Perplexity be guaranteed?

No, and anyone guaranteeing one is lying. Nobody can guarantee a position, a volume of traffic or a citation on an answer engine. What our contract guarantees is the dated log of changes applied to the site, not an outcome on the machine itself.

How long before GEO work can be judged?

Three months minimum, said up front and for that precise reason, not to retain the client. Before anything is touched on the site, the starting point is frozen in figures, which lets a result be judged against a baseline rather than an assertion.

Is an audit listing recommendations enough?

No, and it is the most frequent complaint from SMEs that have already tried. An audit that stays a document nobody implements changes nothing on the site. The question to ask any supplier, current or past, is simple: ask for the dated log of what they actually changed in your code.