Run-time logic for process steps developed in Software AG Designer is created on Integration Server. Integration Server executes business processes and process steps. Every Integration Server that runs process steps is equipped with a Process Engine that controls and directs process execution.

Services such as Flow, web, and adapter services that are developed in Software AG Designer are built on Integration Server. Integration Server executes the services when they are invoked by process steps, tasks, or services.

Business rules developed in Software AG Designer are exported to Integration Servers. The Rules Engines on the Integration Servers execute the rules when they are invoked by process steps or tasks.

If a process step exchanges documents with an external trading partner, the step sends the document to Integration Server, which sends the document to the partner. The partner returns a document to Integration Server, which returns the document to the process so it can continue to its next step.