With the help of motivated, high-performing middle managers who have a good rapport with employees, customers, and top management, the best strategies can be developed and implemented to ultimately achieve record profits. In contrast, a demotivated, burned-out middle management is bound to lead to a decline in all company metrics. Experts have recently written extensively about middle management and agree on its key role. This book answers the most important questions surrounding the corporate middle: How does a sandwich manager become a key figure in the company's success? What does optimal collaboration between different hierarchical levels look like? How can personnel development and succession planning be designed for the corporate middle? The author explains, based on scientific research and practical experience, how to achieve this.