Microsoft already has the beachhead into the enterprise, with their Office 365 offerings. We're seeing most of our Fortune 500 customers move their email, at l

Microsoft already has the beachhead into the enterprise, with their Office 365 offerings. We're seeing most of our Fortune 500 customers move their email, at least, to Office 365, and almost none of the smaller businesses go through the hassle of managing their own Exchange infrastructure. Once they are on Office 365 for email and Office, they basically get Skype, Yammer, and all the other things thrown in for free. I'm sure that this will fold into that same pattern, assuming it's, say, 75% as good as Slack.