GitOps for industrial fleets in 2026 — ArgoCD vs Flux step-by-step, ApplicationSets for thousands of edges, sync waves, and how to handle disconnected sites and rollbacks.
Crossplane Composition Functions (v1.14+) deep dive — Pipeline Mode, KCL/Python/Go runtimes, building self-service IDP abstractions, and when functions beat raw patches.
How Karpenter replaces cluster-autoscaler in production — NodePool design, consolidation, disruption budgets, spot-on-demand mixing, and real-world cost savings (2026).
Architecture decision record for adopting eBPF-based observability in Kubernetes. Comparison with traditional APM agents, Cilium/Hubble/Pixie evaluation, performance overhead analysis, and migration path.
How to write Kubernetes NetworkPolicies for pod-to-RDS egress — CIDR selectors, DNS resolution challenges, Calico vs Cilium, and production-ready YAML patterns.