Public-Private-Partnership (PPP) is a mode of providing public infrastructure and services by the government in partnership with the private sector. It is a long-term arrangement between government and private sector entities for the provision of public utilities and services. In view of the investments made by private sector entities there are risk-sharing and performance-linked payments made by the government to the private entities. PPP concessions can either be sustained by user charges collected by the concessionaire or through annuity payments made by the government. In case annuity payments are made, they are typically borne by the government out of the annual budgetary allocations spread over time and are essentially in the nature of deferred budgetary payments.