Public–Private Partnerships (PPPs) – cooperative institutional arrangements between public and private sector actors – are now an increasingly relevant and globally popular public policy option. The authors argue that even though PPPs are still evolving, there is now sufficient research to bring these joint ventures to account and to provide lessons for the future. The aim of the book is to investigate how PPP reforms function in comparison to the more traditional methods of providing public sector services and infrastructure and who typically experiences the successes and failures of these reforms.