That graph really shows the (mostly automatic, forced) conversions from existing Lync/Skype for Business users rather than brand new Teams ones. Not exactly fair to compare it to Slack without including the existing user counts as well.

I‘m not a Microsoft user, haven’t been for over ten years.

Recently I had to install and register for Teams at work. I haven’t seen an application as clunky and messy as this in a long time. Nothing in its UI makes any sense to me.

On top of that the login process is extremely wonky and unstable.

To me this Microsoft doing again what it does best. Pushing some crappy software into the market by leveraging its market position.

Then feel fortunate if you don't have to install also Skype and Outlook.

Outlook is next on the list. It does replace Lotus Notus though which is why I believe it can only get better.

Slack had to sell their new way of work. Microsoft just had to start turning off the components you already had.

A more real way to portray that market would be to show the 20 years of them fucking around with LCS/OCS/Skype for Business.

Even then, most teams deployments I’ve seen are Webex, iMessage and work cellphone displacements. The adoption of what people do with Slack isn’t there.

Seems like Microsoft feels threatened about once a decade and feels the need to demonstrate how comprehensively it can stomp on someone lacking a similar portfolio.

I don't use Teams because I like it, I use it because I have to at my company...

You get Teams accounts with pretty much any MS thing. Teams still can't be used for chat in enterprise environments. It is laughable.

I'm using Teams in a 10,000 person company with employees and external collaborators. Its our primary chat tool, and its used regularly for presentation broadcasts of over 250 people. Is this Enterprise enough?

How do you get notifications from all tenants at the same time? How do you even check the other tenants when you are in a Teams meeting? I mean, the client disconnects from the meeting if you try to view other tenants. How can you see which channels across five tenants have new messages?

If you are a small company and use Teams internally. Fine, but it simply does not work in an enterprise environments.

Some MS person down voted this I guess. :) I have Teams accounts in at least a handful of tenants and it does not work for chatting.