3ie-supported studies meet real-world evidence demands and are therefore useful to decision makers and other users, as well as being high quality. We fund collections of studies in a sector, rather than one-off evaluations, and focus on priority gaps in the evidence base. We require that our evaluation teams include local researchers and provide support for strengthening their capacities. We encourage national principal investigators. 3ie supports a range of impact evaluations, including formative and process evaluations needed to inform the potential for or design of a full impact evaluation, all of which helps ensure that what we fund is relevant and timely.