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Implementing Domain-Driven Design by Vaughn Vernon

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DDD Is Not Heavy

In no way do I want to imply that properly practicing DDD leads to a heavyweight process with lots of ceremony and all the crufty documentation artifacts that must be supported. That’s not what DDD is about. It is meant to fit well into any agile project framework, such as Scrum, that the team desires to use. Its design tenets lean toward rather rapid test-first refinements of a real software model. If you were in need of developing a new domain object, such as an Entity or a Value Object, the test-first approach works like this:

1. Write a test that demonstrates how the new domain object should be used by a client of the domain model.

2. Create the new domain object with enough code to make the test compile.

3. Refactor both ...

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