
Learn how to integrate AWS Graviton and x86 CPU instances in Amazon EKS using two configurations—A/B testing for gradual migration and Karpenter-controlled weighted provisioning—to optimize costs and improve application resilience.


<div><p>This article demonstrates how to integrate AWS Graviton-based EC2 instances into existing EKS environments running x86 instances to optimize costs and improve resilience.</p><ul><li>Two configuration approaches: A/B testing for gradual migration and Karpenter-controlled for automatic blending</li><li>A/B configuration uses ALB-based ingress to control traffic between x86 and Graviton node pools</li><li>Karpenter configuration uses weighted provisioners prioritizing Graviton with x86 fallback capability</li><li>Applications require multi-architecture OCI image builds for both x86 and Arm64 architectures</li><li>KEDA scales pods based on ALB target response time metrics across CPU types</li><li>Testing showed Graviton instances maintained 300ms response time targets during migration</li><li>Graviton offers up to 40% better price performance than x86-based instances</li></ul><p>Mixed-CPU architectures enable flexible instance selection, improved resilience, and cost optimization while maintaining performance requirements.</p></div>


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