TLDR ;

EKS right-sizing cost optimization trims worker-node spend by 30-50% when request tuning and instance selection run in parallel.

Graviton3 instances deliver up to 40% better price-performance than comparable x86 types for most stateless workloads.

Mixed instance types across m6i, m7g, and c7g families improve Spot availability and bin-packing density.

Lock worker nodes to eu-central-1 Graviton pools to cut both euros and carbon footprint.

EKS right-sizing cost optimization is the discipline of matching worker-node capacity to the actual resource profile of your pods, instead of buying the instance type that "feels safe."

Metric Value

Typical EKS cluster average CPU utilization 20-35%

Wasted capacity (idle cores) 65-80% of bill

According to AWS internal telemetry and third-party studies

According to AWS best practices for EKS , right-sizing produces the single largest cost reduction for most containerized workloads, ahead of Spot adoption and reserved capacity.…