There's a little bit more chatter in this thread about use-cases. This post has a link to a readme that I made which describes how to use all of the functionality in my integration: Bose SoundTouch Support - #8 by tomw
I'm not a Google home user, so I can comment on what Hubitat makes available to that.
But I mainly intended this to support dashboards for playback control and status, as well as to allow for grouping and recalling playback states in automations via Rule Machine or similar. It also supports text to speech for voice notifications inside your home.
