Conclusion: The Frontiers of PB

This chapter summarizes the main findings about PB’s adoption, adaptation, and impact. It raises questions about PB’s future and the limited evidence that continues to hamper researchers and policymakers’ ability to make key policy recommendations. PB is now used in settings as diverse as large cities in wealthy industrialized democracies, rural, low-income villages in countries governed by semi-authoritarian regimes, municipalities of middle-income countries in the Global South, and a variety of contexts in authoritarian countries. This diversity of program types and institutional contexts showcases the allure of PB around the world. Yet, it also highlights the challenges facing policymakers as they consider creating their own programs. The chapter ends with a conceptual discussion to guide policymakers as they adopt or support PB in the future.