Inter-organizational cooperation with SAP solutions - now in its second edition - describes the potential for cooperation in supply chain networks as well as the use of mySAP solutions in an inter-organizational context. The main focus is on applications from the fields of XML/EDI, data warehousing, supply chain management, and electronic markets. Based on five case studies from the automotive industry, the use of mySAP solutions is demonstrated in practice. This second edition has been completely revised to address current challenges related to building cooperation from both the management and software perspectives. To achieve this, the author team was expanded.