The client is the integral link between all parties involved in a construction project throughout all phases, and a BIM project is only successful with comprehensively defined requirements and adequate ordering by the client. The Beuth Pocket BIM for clients offers a comprehensive yet concise introduction to the topic of BIM. It describes "active" and "passive" BIM goals for clients, as well as corresponding BIM processes to achieve optimized project value creation. Improved cost and schedule transparency through BIM affects, among other things, the tendering, awarding, and billing processes, as well as model-based checks of system, information, and functional conflicts. During the operational phase, BIM is used for building automation, asset, space, and relocation management, strategic planning, and proactive facility management.