Advanced Autoscaling Helps Companies Reduce AWS Costs By 70%
InfoQ, Friday, September 5th, 2025
The next generation of Kubernetes autoscaling techniques and tools is enabling organisations to make substantial cost savings in their cloud infrastructure. Svetlana Burninova recently used Karpenter to build a multi-architecture EKS cluster and managed a 70% reduction in cost whilst also improving performance.
In an article on Hackernoon, Burninova explains how her techniques also reduced pod scheduling latency from three minutes to 20 seconds.
"After switching to Karpenter with about 70% spot instance usage, our monthly compute costs dropped by 70%. That's a significant reduction that freed up substantial budget for new features and infrastructure improvements."
Burninova's implementation involved replacing the traditional Kubernetes Cluster Autoscaler with Karpenter, and also moving to multi-architecture setup with both AMD64 and ARM64 instances. This change also resulted in better resource utilisation, Karpenter's right-sizing capabilities helping to increase CPU utilisation from an average of 25% on fixed nodes to 70%.