Borja Perez delivered a major scalability enhancement to the hashicorp/terraform-provider-aws repository by adding tier-8xl support to the AWS EKS control plane scaling configuration. This work involved extending the resource/aws_eks_cluster to support higher-capacity control planes, addressing the needs of users managing large-scale Kubernetes deployments. Borja implemented the feature using Go and Terraform, focusing on infrastructure as code principles to ensure reproducibility and traceability through a single, well-documented commit. The update enables organizations to provision more robust EKS clusters, reflecting a deep understanding of AWS infrastructure and provider extensibility. The work demonstrates focused, high-impact engineering within a short timeframe.