Understanding This Scenario
A PeopleSoft Integration Broker hub configuration includes an integration engine that houses routing rules and transformations. All integrations are routed through the hub, which enables you to centralize routing rules and offload the transformation process.
This diagram shows a one-way hub configuration scenario that involves a PeopleSoft Human Resources (HR) system and a PeopleSoft Customer Relationship Management (CRM) system.

In this scenario, all of the routing rules and transformations are located on the hub.
To implement integrations between the two systems without a hub, you must set up a complete set of complementary routing rules and transformations on each node.