What happened to Software Channels in Satellite 6?

Is there any builtin feature to apply a package baseline to a group of hosts?

In Satellite 5 we had the Software Channels which were useful when you wanted to bring new and existing hosts to a desired RPM baseline.
This feature has not been kept in Satellite 6.

The closest feature I've found is the bulk actions under Host Collection, but that's a one-off momentary action and not a desired state / declarative measure.

I suspect that the real answer is "puppet" but that leaves a pretty huge gap in the out-of-box product, and a lot of (imo) unnecessary wheel reinventing as every org migrating to satellite 6 have to figure this out on their own.

Is there a common, well-documented practice or did this particular ball simply fly past as everyone wanted to work on containers?