Containers

Raja Ganesan

Author: Raja Ganesan

Raja Ganesan is a Cloud Architect at AWS and helping customers with their Cloud journey on AWS. He has been helping companies to navigate their Digital and DevOps transformation journey. He is passionate about containers, serverless, microservices, observability and open source technologies and community building. He tweets at @zeagord.

Using Amazon EC2 Spot Instances with Karpenter

October 2025: This post was updated for accuracy. Overview Karpenter is a dynamic, high performance, open-source cluster autoscaling solution for the Kubernetes platform introduced at re:Invent 2021. Customers choose an autoscaling solution for a number of reasons, including improving the high availability and reliability of their workloads and at the same time reduce costs. With […]