Would you pay 100 percent for something without knowing when you might get it or whether it works? Of course not. Output-based aid (OBA) and results-based financing (RBF) work according to the same principle: service providers are paid only when results are delivered and verified. This video explains how OBA, which specifically targets poor customers, and other forms of RBF differ from traditional development funding, and the benefits of using OBA/RBF.