In a nutshell: On Monday, IBM announced it would be using Slack companywide with its 350,000 employees. It's a feather in the cap for the communications startup, but the company still has an uphill battle. Slack Technologies continues to struggle with Microsoft Teams for marketshare, and shares have foundered since its IPO.
IBM has decided that Slack will become its official collaboration tool. The company has been using Slack with some internal team since 2014, but Business Insider reports the







