For the last five years old, instantaneous messaging app Slack has witnessed success as the app that employees at startups and big companies alike use to talk to each other.

That success has led the company itself to rise: TechCrunch reported Wednesday that the company is looking to raise $400 million in an upcoming round, which would bring the company’s ethic to$ 7 billion — that is,$ 2 billion more than the valuation it achieved when it last-place grew funding in late 2017.

As this chart from Statista pictures, Slack’s user base has been growing exponentially since 2015, with the most impressive uptick “re coming back” the past year. Also of note is that while Slack offers a free form, about 25% of its total userbase pays up for the premium tiers.See the rest of the tale at Business Insider

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