Fedora 27 Content Tracking - Content (modules) delivered by the Modularity WG is tracked here.
Host & Platform upstream - Host and Platform is a set of modules or module stacks defining the base operating system, effectively replacing Fedora 26 Boltron Base Runtime module & concept.
Fedora dist-git - Module definitions are stored in a Fedora dist-git /modules namespace. There is no URL to the namespace itself, only to individual modules. Please see the platform module definition as an example.