Virt Controller manages the lifecycle of virtual machines in KubeVirt
The Virt Controller is a component of KubeVirt, which extends Kubernetes with virtualization capabilities.
The virt-controller watches for VirtualMachineInstance resources and manages their lifecycle, coordinating with the scheduler and virt-handler to run virtual machines on cluster nodes.
For more details, see https://github.com/kubevirt/kubevirt.