FOLIO is an open source Library Services Platform development project that includes partners from the library and vendor communities. FOLIO is designed to be a flexible system meant for all libraries—a system that can be modified to conform to new library standards or technologies and, due to its microservice architecture, is readily adaptable to unique library workflows. This session will focus on the development process from the librarian perspective, specifically the metadata management aspects of FOLIO. Questions that will be addressed include: What are some of the challenges and opportunities that have presented themselves during the development process? What types of applications are available in FOLIO that will be used to create and manage bibliographic and holdings metadata? How does FOLIO intend to accommodate the future of cataloging?