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SAP PI facilitates the integration of business processes that span different departments, organizations, or companies.

SAP PI is based on general standards so as to enable 3rd-party systems to be integrated. At the center of SAP PI is an XML-based communication that uses HTTP (Hyper Text Transfer Protocol). Irrespective of the scenario used, the application-specific contents are transferred in messages in user-defined XML eXtensible Markup Language) from the sender to the receiver either via the Integration Server, or directly between the systems involved.