Oh boy, this book was not easy to get through. I was often reflecting over times in my career when the insights in this book could have saved me (and my colleagues) from headaches.

It leans more toward object-oriented thinking than I’m entirely comfortable with, but that’s easy enough to skip or reinterpret into something more useful (functional programming—yes, I’m biased).

I highly recommend this book to almost anyone working in IT. The tools and insights it provides are valuable, and will help you tackle the complexities of your own software system. One important part is the concept of a ubiquitous language—a shared vocabulary agreed upon and used consistently by everyone working on a system or a distinct part of it.