[wsdfsayy]

I remember at Uber we had tried Slack for a few months and it could not scale to that number of employees (at the time around 5000 worldwide)...

[kemenaran]

Doesn’t Uber use Mattermost these days?

https://mattermost.com/blog/how-uber-uses-mattermost-to-enha...

[wsdfsayy]

yes they have their own internal chat app now this was a few years ago

[paxys]

When was this? Given the number of enterprise customers they claim to have, it is unlikely that Slack can't scale to 5000 users at a company.

[thrav]

Same thing happened with freeCodeCamp