The new Workspace suite has a big sidebar where you quickly toggle between Mail, Chat and Spaces (chat rooms/channels). Notifications for all are in one place.

You naturally have everybody in the company available and built in Google Drive/Office integrations are really solid.

The Google Chat iOS app just has Chat and Spaces separated for you too.

I was really surprised at the level of improvement because I needed to find them a chat option with a BAA for compliance, so a good enough solution that was already built in was helpful.

I don’t think it would be good enough for power users or fully remote companies yet, but small-medium businesses who are primarily in office get a solid win.