Application Integration

April 10, 2026 · View on GitHub

Application-to-application integration view showing data flows, interfaces, and shared services.

Key Elements

Layer	Macros Used
Application	`Application_Component`, `Application_Service`, `Application_Interface`, `Application_DataObject`
Technology	`Technology_Service`

Example

E-commerce platform integration: web portal, order management, inventory, payment, and shipping systems:

@startuml
!include <archimate/Archimate>

Application_Interface(webUI, "Web Portal UI")

rectangle "Core Applications" {
  Application_Component(orderMgmt, "Order Management")
  Application_Component(inventory, "Inventory System")
  Application_Component(payment, "Payment Gateway")
  Application_Component(shipping, "Shipping Service")
  Application_Component(crm, "CRM")
}

rectangle "Integration Layer" {
  Application_Service(orderAPI, "Order API")
  Application_Service(stockAPI, "Stock API")
  Application_Service(payAPI, "Payment API")
  Application_Service(shipAPI, "Shipping API")
  Application_Service(custAPI, "Customer API")
  Technology_Service(esb, "Enterprise Service Bus")
}

rectangle "Data Stores" {
  Application_DataObject(orderDB, "Order Data")
  Application_DataObject(stockDB, "Inventory Data")
  Application_DataObject(custDB, "Customer Data")
}

Rel_Serving(orderAPI, webUI, "")
Rel_Realization(orderMgmt, orderAPI, "")
Rel_Realization(inventory, stockAPI, "")
Rel_Realization(payment, payAPI, "")
Rel_Realization(shipping, shipAPI, "")
Rel_Realization(crm, custAPI, "")

Rel_Serving(esb, orderAPI, "routes")
Rel_Serving(esb, stockAPI, "routes")
Rel_Serving(esb, payAPI, "routes")
Rel_Serving(esb, shipAPI, "routes")
Rel_Serving(esb, custAPI, "routes")

Rel_Flow(orderMgmt, inventory, "check stock")
Rel_Flow(orderMgmt, payment, "charge")
Rel_Flow(orderMgmt, shipping, "dispatch")
Rel_Flow(crm, orderMgmt, "customer context")

Rel_Access(orderMgmt, orderDB, "")
Rel_Access(inventory, stockDB, "")
Rel_Access(crm, custDB, "")
@enduml

Pattern Notes

Application Interface — Application_Interface for the user-facing entry point (Web Portal UI)
Realization — Each Application_Component realizes its corresponding Application_Service (API)
ESB pattern — Technology_Service represents the Enterprise Service Bus routing all API traffic
Flow — Rel_Flow shows data/message flows between applications (check stock, charge, dispatch)
Access — Rel_Access links components to their data stores
Serving — Rel_Serving shows APIs serving the UI and ESB serving all APIs