Concise monthly summary for 2025-10 focused on performance optimization and policy enforcement in the Kubernetes-on-AWS stack. Delivered two Open Policy Agent (OPA) related improvements in the Skipper ingress controller: (1) data preprocessing optimization to accelerate policy evaluations, and (2) a configurable OPA JWT caching layer with defaults that enable caching by default and cap entries for stability. These changes are implemented in the zalando-incubator/kubernetes-on-aws repository and supported by a targeted set of commits to ensure traceability and rollout-readiness. Impact: Improved policy evaluation throughput and reduced latency for JWT handling, enabling higher request per second throughput and more scalable policy enforcement across ingress traffic. The work aligns with performance, reliability, and security objectives in production environments. Technologies/skills demonstrated: Open Policy Agent (OPA), JWT caching, caching strategies, Skipper ingress controller, Kubernetes-on-AWS deployment, Go/configuration management, AWS-based infrastructure, and disciplined commit hygiene for traceability.