• by Gavin O'Malley , Staff Writer @mp_gavin, November 20, 2019

Threatening Facebook’s Workplace, Slack, and other corporate communication services, Microsoft Teams is scaling faster than expected.

The communication app now has more 20 million daily active users, Microsoft announced on Tuesday.

That’s up by more than 50% since this summer, when the tech titan revealed that Teams had amassed approximately 13 million daily users.

By contrast, business collaboration startup Slack reported about 10 million daily active users at the beginning of the year.

Earlier this year, Facebook reported that its Workplace service had roughly 2 million playing customers.

Microsoft Teams and Facebook’s Workplace both launched in 2016.

Making things more interesting, Teams users are doing more than merely messaging each other, according to Jared Spataro, corporate vice president for Microsoft 365.

“They quickly move on to richer forms of communication and collaboration,” Spataro stated.

Last month, for example, Teams users participated in more than 27 million voice or video meetings, and performed over 220 million open, edit, or download actions on files stored in Teams.

More notable business clients include L’Oreal, aluminum giant Alcoa, telecommunications company Telefonica, and bicycle maker Trek.

Notable Facebook Workplace clients include Walmart, Heineken, Virgin Atlantic, Farfetch and Spotify.

Trying to remain competitive, Slack released Block Kit Builder and Block Kit -- a UI tool and framework to help developers make sure their apps are running smoothly on its platform -- at the beginning of the year.

Neither Facebook nor Slack returned requests for comment by press time.