CRM基幹システム UMLコンポーネント図

graph TD
    subgraph CL["Client Layer"]
        USR["CRM Users"]
        VPC["VPN Client"]
        VGW["VPN Gateway"]
    end
    subgraph ES["Edge Security Layer"]
        WAF["WAF Firewall"]
        LB["Load Balancer L7"]
        TLS["TLS Certificate"]
    end
    subgraph APP["Application Layer"]
        AA["App Server AZ-a"]
        AC["App Server AZ-c"]
        BT["Batch Server"]
        ML["Mail Server SMTP"]
        MQ["Message Queue"]
        API["REST API"]
    end
    subgraph DT["Data Layer"]
        DBW[("RDBMS Primary PostgreSQL")]
        DBR[("RDBMS Replica Read Only")]
        FS[("File Server Windows SMB")]
        OBJ[("Object Storage Backup")]
        CA{{"Cache Session"}}
    end
    subgraph OPS["Operations Layer"]
        MON["Monitoring"]
        SEC["Secret Manager"]
        KEY["Key Management"]
        AUD["Audit Log"]
    end
    USR --> VPC --> VGW
    VGW --> WAF --> LB
    LB --> TLS
    LB --> AA
    LB --> AC
    AC --> BT
    BT --> ML
    ML --> MQ
    AA -->|Write| DBW
    AC -->|Read| DBR
    DBW -.->|Replication| DBR
    BT --> FS
    ML --> OBJ
    MQ --> CA
    DBW -.-> MON
    DBR -.-> SEC
    FS -.-> KEY
    OBJ -.-> AUD