Architecture Summary : If your workload has a stable base load, high egress, and runs above roughly 60–70% utilization, bare-metal Kubernetes beats AWS on total cost of ownership — often by 30–60%. If your traffic is bursty or unpredictable, stay on the cloud. The break-even isn't a religious debate, it's a spreadsheet.

I run my own Proxmox homelab with a k3s GitOps cluster, so I'm biased toward owning hardware. But bias doesn't pay server bills — math does. Here's the actual framework.

Why "Cloud Repatriation" Stopped Being a Fringe Idea

For a decade, "cloud-first" was the default answer. In 2026, it isn't anymore. According to a Barclays CIO Survey , 86% of enterprise CIOs are now actively moving at least some workloads back to private infrastructure or bare metal, and the reason is boring and predictable: egress fees, idle capacity, and managed-service markups compound quietly until someone finally reads the invoice line by line.

Public case studies back this up.…