In this directory are located the repositories for the domains.
Domains are economic / industrial sectors. Domains contain subjects.
Subjects are small sectors that can belong to different domains. Subjects are independent repositories that can be led by different organisations.
From the point of view of git Subjects are submodules of the Domains and therefore periodically there will be automatic updates unless relevant changes happen in a subject.
There is also a special domain named CrossSector for those Subjects that cannot be properly assigned to other Domain.