Why Slack should worry about Facebook, Microsoft and Google

Slack may soon be careening back to earth following a meteoric rise that saw the messaging app become one of the most popular and revered in business. That’s because in the last 30 days two of the world’s largest and most influential technology companies have set their sights on Slack and the burgeoning, increasingly crowded collaboration market.Workplace messaging and communications apps have been vying for enterprise adoption for years, but various macro trends have come together t