We've confirmed that all systems are back to normal with no customer impact as of 05/20, 11:50 UTC. Our logs show the incident started on 05/20, 11:21 UTC and that during the 29 minutes that it took to resolve the issue some of the customers may have experienced data latency issue in China East 2 region.
Root Cause: The issue is because of sudden increase of the requests in one of our dependent service.
Incident Timeline: 29 Minutes - 05/20, 11:21 UTC through 05/20, 11:50 UTC.
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.