Implementing Domain-Driven Design

Real-World Domains and Subdomains

I have something more to tell you about domains. They have both a problem space and a solution space. The problem space enables us to think of a strategic business challenge to be solved, while the solution space focuses on how we will implement the software to solve the problem of the business challenge. Here’s how that fits into what you’ve already learned:

• The problem space is the parts of the Domain that need to be developed to deliver a new Core Domain. Assessing the problem space involves examining Subdomains that already exist and those that are needed. Thus, your problem space is the combination of the Core Domain and the Subdomains it must use. The Subdomains in the problem space are usually different ...