We continue to work towards resolution of the increased error rates and latencies for IAM operations in all AWS Regions. The issue continues to affect create, describe, modify or delete of IAM accounts and roles. Other AWS Services that perform these IAM mutating operations may be impacted during this issue. Authentication using IAM accounts and roles are not affected.
Between 12:40 PM and 1:07 PM PST, we experienced elevated API errors and event delivery latencies in the US-WEST-2 Region. The issue has been resolved and the service is operating normally.