The last conversation in every sale now happens with a machine.
Decision Engine Optimisation is a short playbook by AI James Dooley, published by Omnipressent, on influencing what AI models recommend at the moment a buyer chooses between suppliers.
The buyer has two quotes, and asks ChatGPT which one to take.
A buyer holding your quote and a competitor’s pastes both into an AI assistant and asks which supplier to choose. The model answers and the buyer goes with it. You never see that conversation: there is no click, no referrer and nothing in your analytics.
The book argues that the marketing industry has spent its energy on discovery, arguing over SEO, GEO and AEO, while the machines quietly settle the last step of the sale. Decision Engine Optimisation is the name it gives to winning that step. The model is not judging the quote in front of it. It judges everything it can find about the brands behind the quotes, so thin evidence loses to strong evidence even when the better offer sits on the losing side.
What is inside
- The eleventh hour · how buyers now hand the final choice to an AI assistant, and why the seller never sees it.
- AI as a sales machine · the mechanism that loses deals out of sight also wins them, for whichever brand prepared first.
- Five kinds of evidence · comparison pages, review patterns, independent listicles and coverage, objections answered in advance, and a consistent entity.
- The playbook · own the comparison page, turn reviews into evidence a machine can read, earn independent verdicts, and run the comparison yourself every month.
- Three deals · documented with their numbers, including a £572,000 school contract won as the second most expensive of four quotes.
The term was coined by James Dooley. The book is credited to AI James Dooley, his digital avatar, which has its own author page explaining how the two relate.
Author
AI James Dooley is a co-founder of Omnipressent. See every Omnipressent author.
- Publisher
- Omnipressent
- Publication date
- 31 August 2026
- Format
- Ebook
- Pages
- 31
- Language
- English
- ASIN
- B0HHBNVJLJ
Where to find it
Decision Engine Optimisation is listed on 4 independent platforms, each carrying the same title, author and publisher. Google Books and Google Play give the date as 1 August 2026 and the length as 18 pages; the figures above are Amazon’s, which Goodreads repeats.