The book "Frugal Innovations" by Alexander Brem provides a comprehensive overview of the concept of frugality and its application in businesses. It highlights how innovative products and services can be developed with limited resources, which are both sustainable and fulfilling. Starting from a critical examination of the German overengineering approach, the topic of frugal innovations is placed in an international context. The scientifically grounded language of the book enables readers to directly implement the presented approaches and methods in practice. This work is therefore a valuable resource for anyone interested in developing frugal solutions in a business environment.