Successful information management during the implementation of software systems in the areas of ERP or PPS, even in the case of changes and expansions, requires a holistic perspective. The content, the modeling of this content, the lifecycle of information systems, and the available information technology are comprehensively addressed. The second edition is aimed at practitioners in companies, especially those involved in the implementation of SAP/R3 or similar software systems in the areas of PPS, ERP, and e-business, who are seeking a comprehensive overview for the fundamental classification of sub-tasks. Therefore, the book is also suitable for training and further education for business informatics specialists, industrial engineers, engineers, or computer scientists at universities and universities of applied sciences, as well as training institutions for professional development.