Within one Sub Project one API family is developed and maintained. Working groups span more than one (in most cases all) Sub Projects and cover overarching topics like maintaining an API Backlog or Commonalities (topics that are in common for all Sub Projects).
Each Sub Project is contained in one or more separate GitHub repositories. Also each Working Group is contained in one or more separate GitHub repositories. In the “Governance” repository all regulations for the open source project are saved.