The textbook addresses typical management tasks of medium-sized companies through 15 real case studies. Each case study is accompanied by an overview of content, prerequisites, learning objectives, and target audience. This facilitates the simplified and targeted design of courses using the case study compendium, which is suitable for both the selective use of individual case studies in a course and for complete use throughout a semester as a "Case Series" in a specialized subject. The case study compendium is thus the first work to prepare the topic of medium-sized world market leaders for business administration courses. It is particularly suitable for bachelor's and master's students in business and industrial engineering programs. This case study compendium enriches management education.