Final Update: Wednesday, 03 February 2021 13:13 UTC
We've confirmed that all systems are back to normal with no customer impact as of 02/03, 12:03 UTC. Our logs show the incident started on 02/03, 07:58 UTC and that during the 4 Hours & 05 minutes that it took to resolve the issue some customers may have experienced data latency and incorrect alert activation in South UK and South East Australia region.
Root Cause: The failure was due to an issue with one of our backend service.
Incident Timeline: 4 Hours & 5 minutes - 02/03, 07:58 UTC through 02/03, 12:03 UTC
We understand that customers rely on Azure Monitor Service as a critical service and apologize for any impact this incident caused.