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.
Technical comparison of Terraform, Pulumi, and Crossplane — state models, language flexibility, Kubernetes-native vs imperative, drift detection, and real-world trade-offs.