EC2 Auto Scaling Gets Batch Termination—Kill 100 Instances in One API Call
AWS just dropped batch instance termination for EC2 Auto Scaling, letting you nuke up to 100 instances with a single TerminateInstanceInAutoScalingGroup API call. Perfect for AI/ML training jobs and event-driven architectures that need to scale down fast—all instances validate atomically before termination, lifecycle hooks stay intact, and it's available everywhere at no extra cost.
source: [aws/whats-new]