Another tech start-up made a blockbuster debut on the US stock market last week, with shares in Slack ending the week more than 40% higher.
That values the Silicon Valley-based business at $20bn, not bad for a messaging app that was only publicly released in 2014 and has never turned a profit.
So why were investors so keen?
Basically, workplace communication based around email is ripe for a shake-up – and many believe Slack will lead the way.
Indeed, headline writers would have you believe that Slack is the “Email Killer”. But even boss Stewart Butterfield doesn’t go that far.
He does, though, think his Searchable Log of All Communication and Knowledge (Slack) software can revolutionise the way employees communicate.
How does it work?
The software funnels office