Hangouts is now being marketed as a business product, they'll probably take it away from non-org accounts soon enough; perhaps this is the alternative.
I have literally no idea what products Google has in this space. I think I've used all or most of them, but they keep changing names, apps browser integration, etc.
Google still insists on using their terrible app-in-a-browser UI for everything (what do you think I have a window manager for??), the various extensions and plugins are inevitably crap, and the feature set is lacking. I can't mute a conversation on a specific device, I can't schedule when I'm on hangouts.. it's just a pain, so I leave my phone signed out even though we use hangouts at work.