Search used to end with a list. You typed something, you got ten links, and the
competition was for a position in that list. Increasingly it ends with an
answer: somebody asks ChatGPT, Claude, Perplexity, Copilot or Google's AI
Overviews for a joiner in Leith, and a paragraph comes back naming two or three
businesses.
GEO is the work that makes your business one of the ones named. It is not a
trick and there is no submission form. A model builds that answer out of
whatever it can read, understand and have reasonable confidence in, so the
work is making your business legible to something that cannot ask you a
follow-up question.
The practical difference from SEO is this. SEO competes to be a result. GEO
competes to be a source. A result has to be relevant; a source has to be
unambiguous. That changes how you write: one clear statement of a fact, in the
same words, in a place a crawler can reach without running a script.
It also changes what you get. There is no position to report. What you see is
your business turning up in answers, and enquiries arriving from people who
already know your prices because an assistant told them.