eBPF Gives Kubernetes Full Network Visibility Without the Sidecar CPU Tax
Istio sidecars cost 0.5 vCPU per pod at idle. At 100 pods, you're paying for 50 idle vCPUs. eBPF moves observability into the kernel — one hook point per node, not per pod. Here's the architecture, the tools, and when you still need Envoy.