[xupybd]

Domain driven design made functional. It takes the weird world of functional programming and shows how it can be applied to building run of the mill business apps. Instead of being an app that only functional programmers can understand these apps, at least some of the domain modeling can be understood by stakeholders.

[tacotacotaco]

This sounds like "Domain Modelling Made Functional" by Scott Wlaschin, maybe? It walks through the software development process of automating a small business starting with requirements gathering, a valuable step that is often overlooked in programming books. It uses F# but I think anyone familiar with a typed language should be fine, and the info can be applied to any functional language. It uses the type system to great effect to enforce business requirements. I've recommended this book to at least five colleagues in the past year. Very good!

[xupybd]

You're correct sorry wrong title.