This book provides an integrative Business Transformation Management Methodology, the BTM, with an emphasis on the balance between the rational aspects of transformation and the often underestimated emotional readiness of employees to absorb and accept transformation initiatives. The BTM is a response to the limitations of single methods and management approaches that have always been adopted separately from each other. Comprising four phases - Envision, Engage, Transform, and Optimize - the methodology integrates discipline-specific technical and methodological expertise from transformation-relevant subject areas. The BTM provides guidance and support for transformation projects by bringing together the disciplines of Meta, Strategy, Value, Risk, Transformational IT, Program and Project, Organizational Change, Business Process, and Competence and Training Management. While Strategy, Value, and Risk Management set the course for a business transformation, the other disciplines enable the transformation process. The Meta Management discipline is a novel approach that aims at orchestrating the application of all BTM disciplines. It incorporates topics such as business transformation culture, values, and communication, as well as formal and informal structures and roles needed for a successful transformation approach. Additionally, a wide range of theory is discussed to help understand the phenomenon of transformation with new insights from case studies that helped to develop the methodology that is offered here.