Microsoft Teams surpasses 20 million daily active users; rival Slack shares slip

Microsoft Corp said on Tuesday its workplace messaging app, Teams, has more than 20 million daily active users, up from 13 million in July. The software maker offers the app as part of some Office365 business packages, as well as a free version. Teams allows users to chat, share files, make calls and hold web video conferences.

Microsoft Teams, used by companies such as General Electric and SAP, competes with Slack Technologies Inc .