The Public-Private Infrastructure Advisory Facility (PPIAF) - Global Infrastructure Hub (GI Hub) advances collaboration between the public and private sectors to bridge the investment gap and improve the delivery of sustainable infrastructure.

PPIAF supports governments in strengthening policies, regulations, and institutions to enable sustainable and inclusive private sector participation in infrastructure projects. PPIAF builds capacity to expand sustainable infrastructure, leveraging global knowledge to generate actionable insights through its integration with GI Hub. Established in 2014 by the G20, GI Hub, with its extensive private sector network, collaborates with PPIAF’s donors and clients to drive innovation and solutions. Partners include governments, private sector entities, development banks, and international organizations. Following the G20 Infrastructure Working Group's request, PPIAF-GI Hub was relaunched in April 2024 and is now hosted by the World Bank.