[csours]

I haven't experienced MS Teams, but Skype 4 Business can go and die in a garbage fire as far as I'm concerned. The mobile client just sucks monumentally, and the desktop client is missing functionality that every other good chat client has had for years.

[cmarschner]

Teams is neat. I looked back at Slack at first, but no more. Multiple teams, threaded conversations, mobile app (IPhone) works nicely as well. It's there to stay.

[FailOverPeer]

Any thoughts on Cisco spark? I have yet to see it mentioned in the few threads about hangouts alternatives... any reason for that? Just curious what HN users have against it.

[someear]

I think Cisco spark is a niche product that is going to be important to big enterprise, but solely as a communication tool, specifically to facilitate meetings and calls. Just my opinion, but I don't think it has much of a future has a 'hub' of all activity for a company.

[nunez]

Skype for Business isn't Skype. It's Lync with a worse logo. Lync PBX is pretty good but their IM offering is overblown for most.