The book "Corporate Entrepreneurship in Professional Service Firms" by Christopher Kühn offers an in-depth analysis of internal entrepreneurship in professional service firms. Through the examination of six exploratory case studies, it sheds light on the implementation and support of entrepreneurial approaches within these organizations. Kühn analyzes the dimensions of Entrepreneurial Orientation, including proactivity, innovation capability, autonomy, risk-taking, and competitive aggressiveness. The findings are based on interviews with over 40 executives and officials, leading to a well-founded discussion on the practical implications and future research directions in the context of professional service firms. The book is aimed at professionals and scholars who are addressing the challenges and opportunities of entrepreneurship in this specific sector.