When someone asks ChatGPT or Perplexity for a recommendation, they don't get a page of ten links to weigh. They get an answer, often naming a handful of businesses, sometimes just one, with citations attached. Generative Engine Optimisation, GEO, is the discipline of making sure your business is one of the names that gets spoken. It sits alongside SEO and AEO but aims at a different prize entirely: the citation, not the click.
The reason GEO is its own discipline is that generative systems don't work like a search index. A search engine matches a query to pages and orders them. A generative engine builds a model of who a business is, decides whether it understands and trusts that business, and then draws on it when it writes an answer. You are not competing for a slot. You are competing to be a fact the machine is confident enough to state.
Open ChatGPT, Perplexity or Google's AI Overviews and ask for the best provider in your category and city. If your name appears, GEO is working. If it doesn't, you have a citation gap, no matter how well you rank in ordinary search.
What generative engines actually need
They need to reach your site
Before anything else, the AI crawler has to be able to fetch your pages. This sounds obvious, yet it is the most common failure of all. A site can look perfect to a human and quietly turn away the very crawlers that decide the recommendation, through a misconfigured server, an over-eager firewall, or a robots rule nobody remembers setting. If the machine can't read the page, nothing else you do matters, because a page that can't be fetched cannot be cited.
They need to understand what they read
Once a page is reachable, the engine has to interpret it. Structured data, clear labelling of what each part of a page means, who wrote it, what it is about, what the business does, removes guesswork. Plain, direct statements of fact beat clever prose. Machines reward clarity over style, because clarity is what lets them extract a fact they can safely repeat.
They need to trust the source
Reachable and readable is not enough; the engine has to decide the source is credible. That trust is built from consistency and authority: a business identity that matches across your site, your Google Business Profile, and third-party references, plus genuine demonstrated expertise, authorship, depth, and mentions from places the system already trusts. This is the axis our Periodic Table of Digital Authority is built to measure.
Why traditional SEO doesn't get you there on its own
Strong rankings, good backlinks, fast pages, all of it still helps, and none of it is wasted. But a business can rank well in Google and still never appear in an AI answer, because the generative engine is asking a different question. Not "which page best matches these keywords" but "which businesses do I know well enough to name." Those are related, but they are not the same, and the gap between them is exactly where GEO lives.
Where to start
Start by confirming AI crawlers can reach you, because that gate sits before everything else. Then make your key facts machine-readable with clean structured data. Then work on the harder, slower layer: consistent identity across the web and real topical authority, the things that move a machine from "I have seen this business" to "I can recommend this business." The order matters, and doing it out of order wastes effort.
GEO is the newest of the three disciplines and the least crowded, which is precisely why it is worth moving on now. The businesses that AI systems learn to trust while the habit is still forming tend to hold that position afterward.
Common questions
GEO is the practice of getting a business named and cited inside AI-generated answers such as ChatGPT, Perplexity and Google's AI Overviews. Unlike SEO, which aims for a position in a ranked list, GEO aims for a citation inside the answer itself. It relies on machine-readable structure, consistent entity signals and demonstrated authority.
SEO earns a ranking in a list of links. GEO earns a citation inside an AI-written answer. SEO rewards content, links and technical health; GEO adds a heavier weight on how cleanly a machine can read your site, how consistent your identity is across the web, and how much genuine authority you have demonstrated in your field.
Make sure AI crawlers can actually reach and read your pages, state your key facts plainly with structured data, keep your business identity consistent everywhere it appears, and build genuine topical authority. AI systems cite sources they can read, understand and trust, in that order.
Book a diagnostic with Doug to see whether AI systems can reach, read and trust your site, and what to fix first to earn the citation.
Doug Lord is a Digital Authority & AI Visibility Strategist and founder of Digital Dominator. He created the Periodic Table of Digital Authority™ (PTODA), an independent research framework for measuring digital authority, AI visibility and crawler accessibility, and is co-founder of OG01, where he serves as COO and CPO.