ストコン移行 As-Is / To-Be 対比図

graph LR
  subgraph ASIS["As-Is: オンプレミス"]
    direction TB
    subgraph HQ["本部DC"]
      MASTER_A["商品マスタ管理"]
      EOS_A["EOS/EOB 発注管理"]
      DWH_A["DWH 売上分析"]
      BATCH_A["バッチサーバー"]
      DB_A[("Oracle / SQL Server")]
    end
    NET_A["専用回線 / VPN"]
    subgraph STORE_A["店舗"]
      SC_A["ストコン 専用HW"]
      POS_A["POS"]
      PAY_A["決済端末"]
    end
    HQ --> NET_A --> STORE_A
  end

  subgraph MIGRATION["移行"]
    direction TB
    P1["Phase1 Rehost"]
    P2["Phase2 Replatform"]
    P3["Phase3 Refactor"]
    P1 --> P2 --> P3
  end

  subgraph TOBE["To-Be: AWS クラウド"]
    direction TB
    subgraph EDGE["エッジ/セキュリティ"]
      CF["CloudFront"] --- WAF["WAF"] --- COGNITO["Cognito"]
    end
    APIGW["API Gateway"]
    subgraph COMPUTE["ECS/Fargate"]
      SVC_ORD["発注"] --- SVC_INV["在庫"] --- SVC_SALES["売上"] --- SVC_STAFF["従業員"]
    end
    subgraph DATA["データ層 Multi-AZ"]
      AURORA[("Aurora")] --- DYNAMO[("DynamoDB")] --- REDIS[("ElastiCache")] --- RS[("Redshift")]
    end
    NET_B["Direct Connect / VPC"]
    subgraph STORE_B["店舗"]
      SC_B["ストコン クラウド接続型"]
      LOCAL_B[("ローカルDB")]
      IOT_B["IoT Core"]
    end
    EDGE --> APIGW --> COMPUTE --> DATA
    NET_B --> STORE_B
  end

  ASIS --> MIGRATION --> TOBE