The standard work for aspiring and practicing management consultants provides a comprehensive overview of the fundamental concepts and methods of consulting firms. The fully revised, updated, and expanded 3rd edition also addresses the specific demands of digitalization: How will consulting change in the future? Where are the opportunities of digitalization, and where are the limits? How does consulting deal with agile tools and organizations? Which technology trends are driving development forward? In short: Where does the consulting industry stand in the digital transformation process? The increased competitive pressure requires consulting firms to professionalize further. This includes the development of design concepts for strategic orientation as well as the professionalization of marketing and sales.