OS is short for Operating System. The idea of a OS is it allows you to run multiple applications. Right now at time of running, there are 4 applications in DreamOS - Network (Unifi Controller rebranded), Protect (Video Surveillance), Access and Talk (VoIP).
I believe Unifi Access is about physical locks and alarm system. I do not have the details of this as I’m not part of the early access program. This is a nice idea, and is expanding (perhaps redefining) what SDN can be.
The only aspect I can comment on at this point in time is the Network application.
Comment from: Member
This video sums up the flaws of UDM-Pro. It’s really only good for very small businesses, or the home.