mapping.team is an index of OpenStreetMap teams. It allows other mappers to find their local communities, professional mappers to highlight the work they're doing, and for OSM developers to integrate applications with one another.
At the core of mapping.team is an OAuth2 server that builds new capabilities on top of the OpenStreetMap login. As a developer of say, a tasking manager application, you can connect to mapping.team and have users create, update and share teams made in your application with other applications in the ecosystem. This allows for teams and communities to persist across different apps.
This application is a barebones demonstration of how the mapping.team authentication and API work.