In spite of all the interest in individual know-how and learning, capturing and sharing tacit program knowledge remains a significant challenge and requires social interaction. This is exactly what Knowledge SUCCESS set out to change with the introduction of the Learning Circles regional cohort series. Informal, cross-organizational knowledge and information sharing that aligns with regional context are in demand. FP/RH professionals call for new ways to access and use evidence and best practices to optimize FP/RH programs.