Kubernetes (GKE): Deploy, operate, and troubleshoot Kubernetes clusters and workloads on GKE, including configuration, upgrades, monitoring, and cluster/workload networking. Monitoring and troubleshooting: Prometheus, Grafana, Splunk (or similar), and SIEMs/NMS as needed, for health, logging, alerting, and isolating network, SASE, CPE, GCP, and GKE faults.