Add the cost of administrative services: DNS resolvers, ingress controllers, log forwarders, monitoring (e.g. Prometheus, some exporters), autoscalers, tracing

Add the cost of administrative services: DNS resolvers, ingress controllers, log forwarders, monitoring (e.g. Prometheus, some exporters), autoscalers, tracing infrastructure, admission controllers, backups/disaster recovery tools (e.g. Velero)... It can add up to millions per year if you aren't auditing your costs.