This book demonstrates how to establish, revitalize, or restructure idea management within companies. It begins by presenting the economic and legal foundations. Following that, there is a guide to building an idea management system, covering everything from analyzing the initial situation to project management and controlling the idea management process. Additionally, it introduces the levers for optimizing an already existing idea management system. Finally, cross-sectional topics such as the selection of suitable software, performance-related compensation, and the interface to innovation management are discussed in detail. Idea management deals with suggestions for improvement regarding previously common practices and proposals for improvement related to problems defined by the organization.