PPP is a way that government can engage private partners to develop urban infrastructure — facilities — and related services. Common features of the various forms of PPPs include risk allocation, enforceable contracts, payment of the private partners and the role and responsibility of the public partner. PPPs are about sharing and mitigating risks and providing value for money. They are partnerships between the public sector and the private sector for the purpose of delivering infrastructure and/or services traditionally provided by the public sector. PPPs are a subset of the spectrum of private sector involvement in the provision of public infrastructure, ranging from short-term service provision contracts to full divestiture.