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• An early version of this is at edX REST API Conventions, but needs to be updated and fleshed out with more recent wisdom.

12. Domain-

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driven Design Principles

• Build vs Buy → Core, Supporting, Generic
• Location of code (which IDA? which app?) → Bounded Context Responsibilities and Boundaries
• API as a Product → Domain models
• Inter-service interfaces → Business use cases
• Inter-service communication and relationships → Bounded Context life cycles versus Entity-based Services 

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