A Microsoft security exec explains how its Teams workplace chat app market is benefiting from a major shift in how companies buy cloud software (MSFT, WORK)

Over the summer, Microsoft said that its Teams workplace chat app was growing faster than Slack, the one-time unicorn startup that went public this year in a much-watched direct listing.
Microsoft's Office 365 security boss Girish Chander tells Business Insider that a big part of this is because companies are less willing to cherry-pick their favorite apps from different vendors like Slack, and more excited about suites of pre-integrated products. 
Chander says this is a shift away from the