On 9-10 February 2012, the law department at Copenhagen Business School and the Danish Competition and Consumer Authority organised an international conference on the modernisation of the EU procurement rules, "Public Procurement Days 2012 - Modernisation, Innovation and Growth". The overall aim of the conference was to focus on the modernisation of the EU procurement rules, which is one of the main priorities under the Danish Presidency of the EU Council. A number of topics of relevance to the modernisation of the procurement rules were addressed, and many interesting debates took place. More than 130 participants, including legislators, practitioners, organisations and academics, took part in the conference This book contains contributions based on some of the presentations given at the conference. The purpose of this book is to contribute to the ongoing debate on the modernisation of the procurement rules by elaborating on the topics discussed at the conference, and we hope the book can be an inspiration for this debate.