IT controlling means providing services. It supports the security of existence and jobs through profit generation. The book demonstrates how this is achieved. Based on a proven concept of controlling, it systematically presents the aspects relevant to IT controlling. This book serves as a resource for learning, comparing, and referencing, suitable for both students and practitioners. With its comprehensive IT controlling concept, this work is now regarded as the definitive standard reference. It is strongly recommended in universities and seminars as a practical foundation. The presentation is made relatable to practice through suitable examples from significant companies. Exercises and a practice exam particularly offer student readers a way to ensure their learning success.