Slack's challenge is that it's just Slack. It's an extra monthly cost, extra thing to the manage. Atlassian can sell you the integrated package. One price, one

Slack's challenge is that it's just Slack. It's an extra monthly cost, extra thing to the manage. Atlassian can sell you the integrated package. One price, one invoice, tight integration between products. I don't have any data on this, but I think one reason for Slack's success was that people could just start using it without going thorough the IT. I'd assume there's still a huge number of companies who haven't made an official choice on this space. Those might be tempted to go with offerings from Atlassian or Microsoft. Slack could be interesting acquisition for Dropbox (haven't thought out if it could work financially).