GEO against SEO: what is genuinely different
Generative engine optimisation is not a rebrand of SEO, and it is not a separate discipline either. Roughly seventy per cent of the work overlaps. The remaining thirty per cent decides who gets cited.
Key takeaways
- The unit of success differs: SEO wins a ranked position, GEO wins a quoted sentence.
- Generative systems retrieve passages rather than pages, so one crisp sourced claim can outperform a strong page.
- Roughly seventy per cent of the work is shared; crawl access, rendering, speed and entity data serve both.
- GEO cannot replace SEO, because search ranking is often the mechanism by which you enter the candidate set.
SEO optimises for a ranked list of links. Generative engine optimisation optimises for inclusion in a synthesised answer. Most of the underlying work is shared, because both depend on being crawlable, relevant and credible. The genuine differences are the unit of success, the unit of content, and how you measure whether it worked.
Three things that are actually different
- The unit of success. SEO wins a position; GEO wins a sentence. You can be cited without ranking, and you can rank without ever being quoted.
- The unit of content. Search retrieves pages; generative systems retrieve passages. A page that ranks because of its overall strength may contribute nothing quotable, and a modest page with one crisp, sourced claim may be cited constantly.
- The measurement. There is no rank tracker for a conversation. Measuring GEO means sampling questions against assistants on a fixed schedule and recording whether you were named, cited, or replaced by a competitor.
What is exactly the same
Crawl access, server-side rendering, page speed, correct structured data, topical depth, and genuine authority all matter in both. There is no separate GEO technical stack. If your robots.txt blocks a crawler, if your content only exists after hydration, or if your entity data contradicts itself, you have an SEO problem and a GEO problem simultaneously, and one fix resolves both.
Ranking also feeds citation directly. Several assistants ground answers in live search results, which means your search position is often the mechanism by which you enter the candidate set at all. Anyone selling GEO as a replacement for SEO is describing something that cannot work.
Where the thirty per cent goes
The distinctive GEO work is mostly editorial and structural. Rewrite openings so the answer arrives first. Add explicit figures with dates and sources, since recency and specificity both measurably affect citation. Name your brand inside claims rather than relying on a link. Build entity consistency across every place your organisation is described. Add or correct llms.txt and the AI crawler allowlist. And create the quotable artefacts, original data and clear definitions, that give a model something only you have.
How to sequence them
Do the shared work first, because it is a precondition for both and because it has an immediate classic-search return you can point at. Then layer the generative work onto the pages that already earn revenue, rather than starting a separate content programme. A GEO project that begins by publishing new pages on a site with unresolved access problems will produce nothing measurable and will be cancelled at month four.
One practical note on expectations. Generative visibility moves faster than rankings in both directions. A corrected entity or a new sourced statistic can change what an assistant says within days, and a competitor publishing better material can displace you just as quickly. Sample monthly rather than annually.
SEO wins a position. GEO wins a sentence. You need the position to be in the running for the sentence.
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