Environmental protection has become a central concern in recent decades, to which all social groups can and should contribute. Environmental management in companies plays a particularly important role in this context. For small and medium-sized enterprises considering the implementation of an environmental management system, this book compiles the essential foundations and arguments and illustrates possible approaches through numerous case studies. The central contents of DIN EN ISO 14001 and other standards of the ISO 14000 series are summarized clearly and precisely. The correct application of the standards is explained, along with the resulting practical benefits. In addition to numerous updates, this third edition fully incorporates the revision ISO 14001:2015 and addresses new topics as well.