Start Level 1 Node: Enabling Application-to-Application ProcessesEnabling Application-to-Application ProcessesEnd Level 1 Node: Enabling Application-to-Application Processes
   Start Level 2 Node: A2A IntegrationA2A IntegrationEnd Level 2 Node: A2A Integration
      Start Level 3 Node: Configuring the System LandscapeConfiguring the System LandscapeEnd Level 3 Node: Configuring the System Landscape
      Start Level 3 Node: Designing A2A IntegrationDesigning A2A IntegrationEnd Level 3 Node: Designing A2A Integration
      Start Level 3 Node: Configuring IntegrationConfiguring IntegrationEnd Level 3 Node: Configuring Integration
      Start Level 3 Node: Handling MessagesHandling MessagesEnd Level 3 Node: Handling Messages
      Start Level 3 Node: Monitoring Unbounded ProcessesMonitoring Unbounded ProcessesEnd Level 3 Node: Monitoring Unbounded Processes