This document provides an overview of public-private partnerships (PPPs). It defines PPPs and describes their key characteristics, including risk sharing between public and private sectors. The document discusses reasons for governments to pursue PPPs, including budget deficits, aging infrastructure, and the need for private sector expertise. It outlines several models of PPPs, including BOT (build-operate-transfer) agreements. The document lists sectors suitable for PPPs and conditions necessary for their success, and concludes by summarizing benefits such as risk mitigation, cost reductions, and innovation.