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Amazon EC2 Auto Scaling now supports batch instance termination

infraawsgaengineeraws-ec2
feature

Amazon EC2 Auto Scaling introduces support for batch instance termination via the TerminateInstanceInAutoScalingGroup API, allowing up to 100 instances to be terminated in a single call. This enhancement reduces API calls for workloads requiring rapid scale-down, such as AI/ML training jobs, container orchestrators, and event-driven architectures. The feature ensures atomic validation of instances and preserves existing Auto Scaling behaviors like lifecycle hooks and load balancer connection draining. It is available in all AWS Regions at no additional cost.

Features (1)
  • Batch instance termination for EC2 Auto Scaling groups

    EC2 Auto Scaling now supports terminating up to 100 instances in a single API call using TerminateInstanceInAutoScalingGroup. This feature reduces the number of API calls needed to scale down groups rapidly, with atomic validation and preservation of lifecycle hooks and load balancer connection draining for all instances.

Read the original announcement →

https://aws.amazon.com/about-aws/whats-new/2026/08/amazon-ec2-auto-scaling-batch-termination

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