This volume examines the use of market means to pursue public goals. "Market-based governance" includes both the delegation of traditionally governmental functions to private players, and the importation into government of market-style management approaches and mechanisms of accountability. The demand side section deals with forms of interaction between government and the market where the public sector is the "customer". The supply side section deals with the unsettled questions about government's role as a provider within the market system. A third section explores experiments with market-based arrangements for orchestrating accountability outside government by altering the incentives that operate inside market institutions. A final section examines both the upside and downside of the market-based approach to improving governance.