Hip tech startup Uber ditches hip tech startup Slack

Is Slack slacking? The chat app couldn't handle Uber's relatively small workforce. Is this a serious failing or just a bump in the road for the $3.8bn company?

What happens when two darlings of the American tech scene meet in the workplace? It seems that magic emphatically does not happen - at least if the parting of ways between Slack and Uber is anything to go by.

The New York Times reports that the fancy chat app (latest valuation: $3.8bn) didn't play nicely with the fancy minicab app (latest valuation: $62.5bn): "Recently, the ride-hailing service Uber dropped Slack because the service could not handle the thousands of Uber employees trying to communicate simultaneously, according to people who work at both companies."