"You Can Build Your Own Private Cloud" Is Only Half True: What OpenStack × K3s Reveals About the Reality of Day 2 Operations
As VMware migration costs and cloud bills climb in 2026, more companies are reconsidering private cloud. This article examines the real build cost and Day 2 operational burden of self-managed OpenStack + K3s, using actual operational data and industry statistics, to clarify when in-house builds make sense versus a managed Kubernetes service.