A virtual cluster, described by Loft Labs CEO Lukas Gentele at Kubecon + CloudNativeCon Paris, is a Kubernetes control plane running inside a container within another Kubernetes cluster. In this New Stack Makers episode, Gentele explained that this approach eliminates the need for numerous separate control planes, allowing VMs to run in lightweight, quickly deployable containers. Loft Labs' open-sourced vcluster technology enables virtual clusters to spin up in about six seconds, significantly faster than traditional Kubernetes clusters that can take over 30 minutes to start in services like Amazon EKS or Google GKE.