%% Salesforce multi-cloud reference architecture
%% Reference architecture: a reusable pattern, not a live client integration
flowchart TB
  subgraph z0["Core Salesforce org"]
    crm["Sales and Service Cloud<br/>core org"]
    mcn["Marketing Cloud Next<br/>on the core platform"]
    d360["Data 360<br/>unified profile"]
  end
  subgraph z1["Separate Salesforce tenants"]
    mce["Marketing Cloud Engagement<br/>separate tenant"]
    b2c["B2C Commerce<br/>separate tenant"]
  end
  subgraph z2["Other companies"]
    braze["Braze<br/>external company"]
    erp["ERP<br/>external"]
  end
  mcc["Marketing Cloud Connect<br/>managed package"]
  integ["Integration layer<br/>MuleSoft or other iPaaS"]
  keymap["Identity key map<br/>source IDs to shared IDs"]
  crm -->|"selected objects"| mcc
  mcc -->|"sync and sends"| mce
  crm -->|"record events"| integ
  d360 -->|"unified IDs"| keymap
  d360 -->|"segments and consent"| mcn
  keymap -->|"ID lookups"| integ
  integ -->|"profiles, events, consent"| braze
  integ -->|"orders and accounts"| erp
  erp -.->|"invoices and stock"| integ
  braze -.->|"engagement and opt-outs"| integ
  mce -.->|"connector and activation"| d360
  b2c -.->|"commerce data"| d360
  classDef salesforce stroke:#125BD8,fill:#e8f0fd
  class crm,mcn,mce,b2c salesforce
  classDef data stroke:#2f8a3a,fill:#e9f6ea
  class d360,keymap data
  classDef integration stroke:#334155,fill:#eef2f6
  class mcc,integ integration
  classDef external stroke:#64748b,fill:#ffffff
  class braze,erp external