This document provides both an introduction to the key concepts of SAP NetWeaver Process Integration (PI 7.31) and an overview of the tasks and tools that come into play in integration projects. It is targeted at beginners wanting to get involved in the topic and experts already involved in real-life integration projects and who need a handbook to help them stay ahead.
Access the handbook here. It is also available for download in PDF format from the SAP.help.com page above.