Don’t be dazzled by Slack’s big IPO plans. Revolutionising office communication remains a hard sell.

Behind every mega tech IPO, there’s a legend. The legend of Slack, the San Francisco startup valued at USD7 billion that filed for a hugely buzzy public listing last week, is tied to the sprawling, unruly beast that’s modern work. If you are a hyper-growth company that needs to get work done fast, e-mail can’t keep up. Communication must be real-time, issues must be resolved in minutes, and conversations must be streamlined and preserved so that