How I Cut AWS Compute Costs by 70% with a Multi-Arch EKS Cluster and Karpenter

Written by svetlanadevops | Published 2025/08/16
Tech Story Tags: cloud-cost-optimization | aws-eks-cost-optimization | karpenter | terraform | eks-cluster | infrastructure-as-code | kubernetes-autoscaling | karpenter-consolidation

TLDRFaced with slow Kubernetes scaling and rising AWS bills, I replaced the Cluster Autoscaler with Karpenter, built a multi-architecture EKS cluster (AMD64 + ARM64) using Terraform, and shifted 70% of workloads to Spot Instances. The result: 70% lower compute costs, sub-20-second scaling, and significantly better resource utilization in production.via the TL;DR App
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Written by svetlanadevops | DevOps Engineer specializing in cloud-native infrastructure, CI/CD automation, k8s orchestration, system optimization.
Published by HackerNoon on 2025/08/16
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