Answers

The following are the answers to this chapter’s questions:

1. It’s to define software behaviors by establishing who the actors are and what features they expect from a system.
2. Because in the hexagonal architecture, use cases are interfaces that state the supported software capabilities. Input ports, in turn, describe the actions that will enable those capabilities.
3. Output ports appear inside input ports when it is necessary to interact with external systems.
4. By implementing the Application hexagon, we’re supporting the overall hexagonal application’s effort to automate operations without relying on specific technologies to do so.