Salesforce has completed a phased migration of more than 1,000 Amazon Elastic Kubernetes Service (EKS) clusters from the Kubernetes Cluster Autoscaler to Karpenter, AWS’s open-source node-provisioning

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Salesforce migrated over 1,000 EKS clusters from Kubernetes Cluster Autoscaler to Karpenter, reducing scaling latency from minutes to seconds and cutting operational overhead by 80%. The phased migration used custom automation tools to handle node transitions while respecting Pod Disruption Budgets and supporting rollbacks. Results include improved node utilization through better bin-packing, 5% cost savings in FY2026 with 5-10% more expected in FY2027, and faster developer onboarding through self-service infrastructure. The migration addressed challenges like misconfigured PDBs, Kubernetes label constraints, and workload patterns requiring disruption strategy adjustments.

Salesforce Migrates 1,000+ EKS Clusters to Karpenter to Improve Scaling Speed and Efficiency