The book provides an overarching perspective on sustainability from a historical, practical and legal perspective. It offers a holistic understanding of economic and ecologic concepts. Schools for sustainable business models are introduced and discussed. As a broader concept Life Cycle Assessments are discussed and examples for their application are provided with a focus on CO2 Footprints. Ecodesign as measures for reducing Carbon Footprints are introduced both for physical products and for service organizations. From an organizational perspective it is clear that managing the reduction of the sustainability-related impact is a matter that has to involve all stakeholders. Tasks for all involved are given and their contributions are described. As it is crucial to provide evidence for the activities reported audits are described as well methods to transfer information to the appropriate stakeholders. The book is targeted at practitioners and students who want to get to know the subject or need to implement the respective measures in companies.