Is team chat some newfangled thing, or have people just forgotten that this has always been a thing? Ten years ago Sametime and Microsoft Office Communicator ha

Is team chat some newfangled thing, or have people just forgotten that this has always been a thing? Ten years ago Sametime and Microsoft Office Communicator had persistent chat rooms that are identical to Slack channels, and they were certainly not the first. The company I work for was founded on a persistent chat product cobbled together in the wake of a startup collapse in the first dotcom bust.