flowchart LR
    subgraph Kunde
        K[Kundenportal\nHouston]
    end
    subgraph WorkSimple
        H[Houston\nASP.NET Core]
        F[Filestash\nS3-Browser]
    end
    subgraph Infrastruktur
        E[Efecte\nCMDB]
        S3[(S3-Speicher\nStorageGRID)]
        AAD[Microsoft\nEntra ID]
    end
    K -->|HTTPS| H
    H -->|REST| E
    H -->|AWS SDK| S3
    H -->|OpenID Connect| AAD
    F -->|S3-API| S3