Delegating public tasks to the private sector is not only a product of recent decades but rather a much longer tradition in most Western societies. However, the nature of the collaboration between public and private sector is dynamic and changing. One of the most recent trends in terms of collaboration between public and private sectors is an aim towards partnership. The term "public-private partnership" has made its way into the political rhetoric in recent decades and is now increasingly appearing in both international and national debates on methods of accomplishing public tasks and the means to tackle social challenges in society. In Finland PPP was introduced as a national level policy option in 2007.