Roles, boundaries, and Conway's Law in Use Case Design

    Starting with role, let me ask you a question. If you were doing this by yourself for the first time, would you have labeled Visitor or Member as User? I know I would have.

    So why didn't we?

    Why didn't we just label User as the primary actor?

    /book-assets/Software Design and Architecture Wiki 16ec9c6a09b3410ca7be7920be75e128/Part IX Building Web Applications with Domain-Driv 899ba58a83f04bc5ab3e41f3966d2110/11 Building a Real-World DDD app 6cf5f590a32b43f3bf8eebf5eb126bf9/How to plan a new project 0da832842455460482b064478998c7eb/Planning with UML Use Case Diagrams da9ed922628b45a5811c87ba131e49c7/Roles,%20boundaries,%20and%20Conway's%20Law%20in%20Use%20Case%20De%2074b49ecb2657448f99447c2acbc7b90b/4-use-cases-3-transparent.svg

    It's because role dictates responsibility.

    Role dictates responsibility

    While we could call everyone a User, that could be unproductive to the ubiquitous language…

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