Book excerpt: The main objective of public procurement regulation is to provide a government with the supplies and works it needs to operate. This primary objective is connected to the principle of value for money, and for the European Union, with the aim of ensuring the functioning of the internal market in public procurement. However, other objectives related to environmental and social concerns have always played a role as well. These range from the award of contracts, to workshops for the disabled, to strict environmental specifications. These 'secondary' or 'horizontal' objectives, also referred to as 'green procurement' or 'social procurement, ' are the subject of this book. The analysis covers the EU internal market law of green and social procurement, with emphasis on the interpretation, implementation, and practice, in a range of Member States of the EU, and includes a comparative study