The book develops the ideas presented by the author in an article published in the Harvard Business Review and which received the prestigious McKinsey Award for applied character and innovative thinking in business and management. John Kotter encourages organizations to create a combined management system that combines a time-tested, reliable and effective hierarchical organizational structure with a flexible and dynamic network structure, similar to that of a start-up company. According to the author, the combined management system provides large, mature companies with a key tool to meet the demands of a rapidly changing environment. The book is intended for anyone who is ready to implement significant reform in their organization with the goal of achieving competitive victories in any industry - be it public administration or financial services.