Amit Upadhyay modernized Kubernetes attestation in the spiffe/spire repository by replacing the deprecated k8s_sat node attestor with the k8s_psat plugin. He systematically removed all references to k8s_sat from configuration files, documentation, and internal plugin catalogs, reducing configuration drift and aligning the project with current security best practices. His work focused on code refactoring and deprecation management, leveraging Go and HCL to ensure a smooth transition. By adopting the PSAT-based approach, Amit improved the maintainability and security posture of SPIRE’s Kubernetes integration. The depth of his changes demonstrates careful attention to both technical detail and long-term project health.