DDD + Clean Architecture Roadmap

Clean Architecture → DDD → CQRS → Serverless Integration

Phase 1: Clean Architecture

• [ ] Understand 5-layer architecture and dependency rules
• [ ] Implement interface, application, domain, and infrastructure layers
• [ ] Checkpoint: Dependencies only point inward

Phase 2: Domain-Driven Design

• [ ] Identify bounded contexts
• [ ] Define aggregate roots and value objects
• [ ] Implement domain events
• [ ] Checkpoint: Domain layer has no external framework dependencies

Phase 3: CQRS

• [ ] Separate commands and queries
• [ ] Implement command handlers
• [ ] Implement query handlers
• [ ] Checkpoint: Read and write models evolve independently

Phase 4: Serverless Integration

• [ ] Map domain services to cloud functions
• [ ] Configure API Gateway routes
• [ ] Implement event-driven domain events
• [ ] Checkpoint: Serverless deployment runs normally

Practical Recipe

• DDD + Serverless Recipe — Project scaffold + API design + deployment templates

Corresponding Open Domain

• ProChain — Procurement mall domain modeling practice source