Microsoft is just jealous, it took the focus from their large Azure outage, also on Friday: "Major Microsoft 365 outage caused by Azure configuration change" - https://www.bleepingcomputer.com/news/microsoft/major-micros...
To compensate and keep the focus on them, as masters of all outages...They will take at least until Tuesday, (according to their own info...) to fix the current ongoing issue with Teams scheduling: https://portal.office.com/servicestatus