This article highlights community and stakeholder mobilization initiatives in the library and heritage sectors that help in the transition to the next generation of metadata. We draw from the Next Generation of Metadata round table discussions organized by OCLC Research in March 2021. In these discussions, we saw next generation metadata mobilization taking place along two trajectories: (1) transforming and publishing institutionally sourced metadata and (2) improving metadata already in the supply chain. The article provides context and scope from the round table conversations and highlights national initiatives taking place in both mobilization areas. The article then discusses the challenge of managing at multiple scales, as efforts of local, national and global scale gear up to connect with each other.