Software Project Roadmap Template (Capstone Projects)

flowchart TB
    subgraph D1[Requirements]
        direction LR
        A[Study the business process] --> B[Functional and non-functional requirements] --> C[Use cases and user roles]
    end
    subgraph D2[Design]
        direction LR
        D[Architecture design] --> E[Database design] --> F[API and UI design]
    end
    subgraph D3[Implementation]
        direction LR
        G[Backend development] --> I[Integration]
        H[Frontend development] --> I
    end
    subgraph D4[Testing and deployment]
        direction LR
        J[Functional testing] --> K[Performance and security testing] --> L[Deployment]
    end
    subgraph D5[Conclusion]
        direction LR
        M[System evaluation] --> N[Summary and future work]
    end
    D1 --> D2 --> D3 --> D4 --> D5

Draw a software project roadmap in Mermaid flowchart TB syntax with five subgraph phases: Requirements (study the business process → functional and non-functional requirements → use cases and user roles), Design (architecture design → database design → API and UI design), Implementation (backend development and frontend development in parallel → integration), Testing and deployment (functional testing → performance and security testing → deployment), Conclusion (system evaluation → summary and future work). Add direction LR inside each subgraph so the steps run horizontally, and connect the phases by their subgraph ids (for example S1 --> S2). Output only the mermaid code block.