No longer in need of traditional aid, middle-income governments want value-adding services in areas in which they lack adequate expertise or experience. To succeed in this new arena, agencies must be able to add value by playing one or more key roles: advisor, enabler, coordinator, or advocate. Those agencies that can provide advice on how to design an effective social program, for instance, or that have the skills to enable national authorities to implement effective programs, will be well positioned to succeed.