>The software giant counted 32 million daily active users of Teams last week on March 11th, but this jumped by 12 million to 44 million daily active users yesterday.
https://www.theverge.com/2020/3/19/21186452/microsoft-teams-...
Zoom does not release numbers but they have seen an increase say in usage but if we look at estimated numbers:
>Zoom had 12.92 million monthly active users, up 21% since the end of 2019, Chrane and Isaacs wrote, citing data from privately held Apptopia.
https://www.cnbc.com/2020/02/26/zoom-has-added-more-users-so...
Microsoft seems to have had an increase that similar to Zoom's whole user base in a week (and I don't know how much was added before that).
I think people in tech circles underestimate how many large non-tech companies just followed Microsoft into the cloud and started to use Office 365. And I assume a lot don't use it that much, maybe for a meeting here and there and a few (or way too many) channels but suddenly everyone in the company is on it.