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-# Domain driven design
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+# Domain-Driven Design
+
+Domain-driven design (DDD) is a software design approach focusing on modeling software to match a domain according to input from that domain's experts.
+
+In terms of object-oriented programming, it means that the structure and language of software code (class names, class methods, class variables) should match the business domain. For example, if a software processes loan applications, it might have classes like LoanApplication and Customer, and methods such as AcceptOffer and Withdraw.
+
+DDD connects the implementation to an evolving model and it is predicated on the following goals:
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+- Placing the project's primary focus on the core domain and domain logic;
+- Basing complex designs on a model of the domain;
+- Initiating a creative collaboration between technical and domain experts to iteratively refine a conceptual model that addresses particular domain problems.
+
+Free Content
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+Domain Driven Design Quickly