This document provides an overview of public private partnerships (PPPs) in India's infrastructure sector. It discusses the background and need for PPPs to boost infrastructure investment. Several initiatives were taken over the Eleventh and Twelfth Plans to promote PPPs, including setting up institutions to appraise projects, providing viability gap funding, and developing standard documents. While over 280 projects were approved, implementation has faced challenges. PPPs have been most successful in roads but need reviving, with issues like aggressive bidding and delays in land acquisition and clearances needing addressing.