The Generalist Repository Ecosystem Initiative (GREI) hosted a 2-day virtual workshop presented by the seven participating generalist repositories on January 24 & 25, 2023. The NIH Office of Data Science Strategy sponsored workshop focused on GREI's vision of developing collaborative approaches for data management and sharing through inclusion of the generalist repositories in the NIH data ecosystem, and better enabling search and discovery of NIH-funded data in the generalist repositories. The workshop featured keynote speakers and panel discussions with leaders in open data from the research community, NIH, and data community organizations. Interactive training sessions were led by GREI repositories, presenting use-case-specific guidance on sharing and discovering data in generalist repositories. Presenters also gathered community feedback to inform future GREI work and to enhance support for NIH data sharing with common functionality, interoperability, and “coopetition” among generalist repositories.