Systematically addressing the drivers, the tools, and sector-specific elements that play a role in the field of sustainable development, this text begins with a general introduction to eco-efficiency and the related challenges to industry in its implementation. It then presents 23 case studies, almost all written by industrial experts who tell how they deal with the challenge: what the motivators are, what tools can be used and how they can be implemented, and what are the specific elements in sectors like building, electronics and packaging. These contributions come from multinationals such as Unilever, Procter & Gamble, Akzo Nobel, Philips and Ciba-Geigy, as well as small and medium-sized enterprises from such sectors as the building and furniture trades.