Many organizations find that the use of Scrum does not bring the expected positive effects. In addition, such projects often do not seem to be really controllable. Accordingly, attempts are made to achieve more control and controlling possibilities and better risk and quality management by combining Scrum with a project management methodology. Often it remains with the attempt, because thereby some fundamental considerations and realizations are not considered. Justus M. Dumont, a successful consultant and project manager for more than twenty years, has this to say: "Many customers believe that Scrum leads to productivity increases and cost reductions in every case. The fact that this is not automatically the case and, in many cases, leads to loss of control and poorer results makes them look for alternatives. Many believe they can find the best of both worlds, so to speak, by combining classic project management and Scrum, only to find that they are more likely to achieve the disadvantages of both approaches." In this book, the author presents an approach that has optimally combined agility and project control for more than two decades, thereby even enabling successful fixed-price projects.