Complementing the previous contributions, this chapter argues that the evaluation of integrated care services and programs, as any evaluation of a complex intervention, requires the skillful use of research techniques as well a great dosage of resourcefulness and inventiveness. However, it has some distinctive characteristics that derive from the object of the evaluation. Drawing from the authors’ experience conducting evaluations of international health and care programs and services, the chapter explores those aspects that evaluators need to consider when crafting their evaluations in the context of integrated care.