This report summarizes what the Institute explored and learned at a workshop convened on April 28-29, 2014 as part of the Lessons Project. The project sought out experts in a variety of disciplines and commissioned papers to learn from the body of relevant evidence and experience each could offer. AcademyHealth then convened a workshop of 53 experts to discuss the papers and their potential lessons for health services and policy research. The rich discussion over the two days suggested a host of observations and lessons for the producers, funders, translators, and users of health services and policy research.