The manuscript is no longer with a publisher. I am self-publishing Event Sourcing and CQRS on Amazon on November 1, 2026. There will be a paperback and a hardcover. Both editions are 448 pages at 7 by 10 inches. There is no preorder. I will add the Amazon links when the listings exist.
The .NET 10 reference implementation is public under the MIT licence. You can clone it today.
The chapter list and the current status are on the book page.
The book and the repository are written so a team can build this themselves. If the patterns belong in a system you already run, and you want your own experts in the room with someone accountable for the cutover, start with a free hour.
When the system warrants a deeper look, the next paid step is a fixed-scope Legacy Software Assessment. The fee is quoted on that call, and it is creditable toward a later project.