Every design decision has the potential to include or exclude customers. Global Research emphasizes the contribution that understanding user diversity makes to informing these decisions, and thus to including as many people as possible. User diversity covers variation in capabilities, needs and aspirations. I will discuss how we use Global Research to prioritize what product teams really need to build well and understand if their designs have relative ease of use that translates well to non-US users. Global Research priorities addresses some of the most challenging problems facing our global users today.