Kyle Vikstrom, Director of Microsoft Investor Relations, shared the new Teams usage number with me ahead of the Q4 FY21 analyst call. The new metric Microsoft now is using is monthly, not daily, active users.
On Microsoft's earnings call, officials said that Microsoft has nearly 80 million monthly active Teams Phone users. They added that 124 organizations now have more than 100,000 users of Teams and nearly 3,000 have more than 10,000 users.
Teams is part of Microsoft's "Commercial cloud" category and also is part of its office commercial products and cloud services revenue category. Teams began as a group-chat platform but Microsoft has been turning it into an almost operating-system-like product over time by extending its capabilities and features. Microsoft officials said "commercial cloud" revenues -- Office 365, Azure, Dynamics 365 and other cloud services -- hit $19.5 billion in Q4, compared to $14.3 billion a year ago.