SAP PI / PO ( Process Integration ) :
SAP Process Integration (SAP PI) forms the basis for the integration of business processes. SAP PI provides a technical infrastructure for XML-based message exchange to enable the integration of SAP systems with each other on the one hand, and SAP and non-SAP systems on the other.
In SAP PI, integration knowledge is shipped in the form of pre-defined integration scenarios. Furthermore, SAP PI provides a set of integrated tools for creating and managing all integration-relevant information.