A good software architecture should keep the cost of development low over the complete lifetime of an application.This book discusses how the Hexagonal Architecture style tries to fulfill this goal and translates the concepts into actual code to provide inspiration for software developers. Looking for inspiration on how to build a web application with a clean, maintainable architecture can be frustrating. Many web sources and books do a great job of explaining the concepts of a clean architecture, but fall short in giving hands-on advice on how to implement them.