Final Update: Wednesday, 16 February 2022 14:37 UTC
We've confirmed that all systems are back to normal with no customer impact as of 02/16, 12:56 UTC. Our logs show the incident started on 02/16, 12:30 UTC and that during the 26 minutes that it took to resolve the issue, customers using Application Insights may have experienced intermittent data gaps and incorrect alert activation in US West2.
Root Cause: We determined that one of our backend service became unhealthy. This resulted in the dependent service to be unavailable.
Incident Timeline: 26 minutes - 02/16, 12:30 UTC through 02/16, 12:56 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.