To be able to respond individually to customer requests even in series production, special requirements must be placed on development management and production preparation. Using the example of mechatronic systems, the importance of a targeted approach to interdisciplinarity and product complexity is highlighted. The book can serve as a guide for designing development processes in customized series production. Based on the examples discussed, suitable approaches for industrial practice are presented, and the use of methods and tools is explained. Privatdozentin Dr.-Ing. Iris Grässler, after studying mechanical engineering at RWTH Aachen, was a project manager for reorganization projects in the automotive industry at the Chair of Production Systems, Tool Machine Laboratory, RWTH Aachen, and earned her doctorate in the field of S.