The recently approved Public Procurement Directive 2014/24/EU has brought a major overhaul to EU law and made significant changes to the obligations of contracting authorities in the Member States. Concurrently, the new directive has introduced some measures of flexibility and important new requirements. This book focuses on the essence of these changes, starting with the definition of a public procurement contract to end with changes to concluded contracts. In between essential aspects of the reform are analysed, including the new rules on in house and public-public partnerships, on qualification, on the new and more flexible award procedures, including those aimed at fostering innovation. Specific attention is also paid to the new emphasis on strategic procurement, including to the benefit of SMEs, and to the renewed efforts to exploit e-procurement and aggregated purchasing. The different contributions provide an in-depth analysis of most of the new provisions in Directive 2014/24/EU and will be very valuable to academics and practitioners, especially considering that some of the new provisions may have immediate effects.