flowchart LR
    A["Delegating IT work<br/>externally"] --"Defining service<br/>levels via SLA"--> B["Guaranteeing<br/>service quality"] --"Managing performance<br/>via SLM"--> C["Focusing on core<br/>competencies and cost optimization"]

    style A fill:#E3F2FD,stroke:#1976D2,color:#000
    style B fill:#FFF3E0,stroke:#F57C00,color:#000
    style C fill:#E8F5E9,stroke:#388E3C,color:#000
  

    flowchart TD
    subgraph R1["　"]
        direction LR
        S1["Service Scope<br/>Defines target services<br/>and boundaries of responsibility"]
        S2["Performance Metrics<br/>(KPI/SLI)<br/>Availability, response time,<br/>throughput, error rate"]
    end
    subgraph R2["　"]
        direction LR
        S3["Reporting<br/>Measurement cadence,<br/>report format and procedure"]
        S4["Penalty Provisions<br/>Penalty/credit clauses<br/>when the SLA is not met"]
    end

    style S1 fill:#E3F2FD,stroke:#1976D2,color:#000
    style S2 fill:#F3E5F5,stroke:#7B1FA2,color:#000
    style S3 fill:#FFF3E0,stroke:#F57C00,color:#000
    style S4 fill:#FFEBEE,stroke:#D32F2F,color:#000
    style R1 fill:none,stroke:none
    style R2 fill:none,stroke:none
  

    flowchart LR
    DEF["Define SLA<br/>Negotiate target level<br/>and sign contract"]
    MON["Monitor<br/>Real-time performance<br/>measurement and data collection"]
    REP["Report<br/>Analyze and report<br/>KPI achievement rate"]
    IMP["Improve<br/>Analyze causes of shortfall<br/>and renegotiate SLA"]

    DEF --> MON --> REP --> IMP --> DEF

    style DEF fill:#E3F2FD,stroke:#1976D2,color:#000
    style MON fill:#FFF3E0,stroke:#F57C00,color:#000
    style REP fill:#F3E5F5,stroke:#7B1FA2,color:#000
    style IMP fill:#E8F5E9,stroke:#388E3C,color:#000