The book "Rapid Prototyping and Early Acceptance Testing of Mobile Applications" by Wolfgang Schwaiger provides a comprehensive analysis of the challenges and opportunities associated with the development of mobile applications, particularly in the tourism sector. It highlights that the acceptance of mobile services is often difficult to predict, as user acceptance tests can rarely be conducted before actual implementation. This frequently leads to misinvestments in the development of applications that may not meet market demands. The book presents a software framework that enables the integration of rapid prototyping into the development process to conduct early acceptance tests in a real usage context. This methodology promises savings in time and costs, as well as an increase in quality and customer satisfaction. The application of the proposed methodology is illustrated using a mobile tour guide prototype and compared with traditional approaches to mobile software development.