The AWS Node Termination Handler makes it easy for customers to take advantage of the cost savings and performance boost offered by EC2 Spot Instances in their Kubernetes clusters while gracefully handling EC2 Spot Instance terminations.  

from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/11/aws-supports-automated-draining-for-spot-instance-nodes-on-kubernetes/