GKE cluster ep3-quantax-dev running on GCP with segregated node pools for application and Redpanda workloads, using private endpoints and Cloud NAT for secure egress-only networking. The topology spans a VPC with separate node and pod CIDR ranges, featuring a default node pool for Kilkenny services and a dedicated Redpanda pool with hard NO_SCHEDULE taints to isolate stateful brokers. MongoDB Atlas integrates via Private Service Connect, eliminating public IP exposure while maintaining high availability through a 3-node replica set. This architecture demonstrates production-grade isolation patterns suitable for development environments requiring multi-tenant workload separation and external database connectivity without internet-facing endpoints.