The Public-Private Infrastructure Advisory Facility (PPIAF) helps governments strengthen policies, regulations, and institutions to catalyze sustainable and inclusive private participation in infrastructure. As part of these efforts, PPIAF promotes knowledge transfer by funding research and tools, strengthening policies and institutions, building capacity to scale infrastructure delivery, and improving capability of subnational entities to access finance without sovereign guarantees. Supported by donors and administered by the World Bank, our work helps generate hundreds of millions in infrastructure investment.