[Increased Launch Template API Error Rates] Service impact: Increased Launch Template API Error Rates

Starting at 2:56 AM PDT, we began experiencing increased error rates when calling EC2 Launch Template APIs in the US-EAST-1 Region. Our engineers have been engaged and are actively working to mitigate the impact. Additionally, Amazon Elastic Kubernetes (EKS) customers may experience errors when creating or updating clusters, or when launching and scaling nodes via Managed Node Groups, EKS Auto Mode, or Karpenter; this issue does not impact existing clusters and nodes. We have identified believe the root cause to be a congestion issue within an EC2 internal subsystem responsible for processing EC2 launch template workflows. We are pursuing multiple mitigation paths. We recommend that customers retry any failed requests during the impact window. While we do not currently have an ETA for full recovery, we are prioritizing this issue and will provide another update by 7:15 AM PDT or sooner if we have additional information to share.