Personnel selection and development are central tasks of HR management. Assessment centers, which are increasingly gaining popularity in the German-speaking world, have been providing valuable assistance in tackling these tasks for many years. This volume offers an overview of various approaches to this method and presents all the necessary preliminary considerations, procedural steps, and follow-up processes for conducting and implementing assessment center procedures. Current international research findings are presented in a practical manner, with recommendations for action developed and concrete solution options for practice introduced. Specifically, the steps of requirement analysis, the creation and selection of observation dimensions, the design of exercises, the implementation of observer training, the measures themselves, as well as the observer conference and feedback phase are detailed.