As of April 2020 Microsoft Teams had more than 75 million daily active users, two thirds of whom shared, collaborated or interacted with files on Teams.

Judge as of late April 2020 (Microsoft's FY20 Q3 results). True: official Microsoft materials (Q3 FY20 earnings call transcript or press release, or Microsoft blog posts) state that Teams had more than 75 million daily active users and that about two thirds of them shared, collaborated or interacted with files on Teams. Mostly true: the 75 million DAU figure is confirmed but the share using files differs slightly (e.g. 'more than half' or roughly 60–70%), or the date of the figure differs by a few weeks. Mixed: one of the two figures is confirmed and the other is unsupported or clearly different. Mostly false: the DAU figure is materially below 75 million at that time, or the figure refers to a different metric (e.g. monthly users or meeting participants). False: both figures are contradicted by Microsoft's reported data.

Set before the research began.

1. E1 Microsoft Teams Usage Rips Higher to 75 Million Daily Active Users -- Redmond Channel Partner Redmond Channel Partner (Scott Bekker's Blog) · 30 April 2020

   “Microsoft CEO Satya Nadella revealed an updated figure for daily active users (DAU) on Wednesday of 75 million.”

2. E2 2 years of digital transformation in 2 months Microsoft News (news.microsoft.com) · 4 May 2020 Own record

   “Teams now has more than 75 million daily active users, and two-thirds of them have shared, collaborated, or interacted with files on Teams as well.”

E3 is an official Microsoft News post dated 2020-05-04. It says Teams "now has more than 75 million daily active users," and that two-thirds of them have shared, collaborated or interacted with files on Teams. E2 is an independent trade report from 2020-04-30. It confirms that Nadella gave an updated daily active user figure of 75 million that week. Between them, the two sources confirm both figures in the claim for late April 2020.