In terms of concepts, we like Control Apps / Core / Outputs – I’ll leave it as an exercise for you to figure out what is what … if you get it wrong, we failed. 
In terms of software, we are leaning towards:
- Roon (all-in-one)
- Roon Remote (Control App + Outputs (if applicable))
- Roon Server (Core + Outputs)
- Roon Bridge (Outputs)
Plus you can output devices from hardware manufacturers:
- Roon Ready Audio Devices (Networked output devices, implementing RAAT)
- Roon Certified USB Device (USB devices that are known to work well and without quirks with Roon)
And you can get server devices from hardware manufacturers (these devices run Roon Core and may or may not include Outputs):
- Roon Core Certified Devices (Roon takes these devices into consideration when planning for the future, and assures they have a very long life with Roon)
- Roon Core Capable Devices (Devices that work fine with Roon for now, but will not be taken into consideration when planning for future updates. For example, ARM, Intel Atom and J1900 based devices).
We haven’t committed to all the names yet, and that Roon Core Certified vs Roon Core Capable thing isn’t nailed down yet.
Thanks for your help… it’s funny how more and more people are gravitating toward the same names… means we all did something right 