Anfang Ebene 1 Knoten: Enabling Application-to-Application ProcessesEnabling Application-to-Application ProcessesEnde Ebene 1 Knoten: Enabling Application-to-Application Processes
   Anfang Ebene 2 Knoten: Application-to-Application IntegrationApplication-to-Application IntegrationEnde Ebene 2 Knoten: Application-to-Application Integration
      Anfang Ebene 3 Knoten: Configuration of Usage Type Process Integration (PI)Configuration of Usage Type Process Integration (PI)Ende Ebene 3 Knoten: Configuration of Usage Type Process Integration (PI)
      Anfang Ebene 3 Knoten: Variant-Specific ConfigurationVariant-Specific ConfigurationEnde Ebene 3 Knoten: Variant-Specific Configuration
         Anfang Ebene 4 Knoten: Integration Using the Plain J2SE Adapter EngineIntegration Using the Plain J2SE Adapter EngineEnde Ebene 4 Knoten: Integration Using the Plain J2SE Adapter Engine