kfctl is the control plane for deploying and managing Kubeflow. The primary mode of deployment is to use kfctl as a CLI with KFDef configurations for different Kubernetes flavours to deploy and manage Kubeflow. Please also look at the docs on Kubeflow website for deployments options for different cloud providers
Additionally, we have also introduced Kubeflow Operator in incubation mode, which apart from deploying Kubeflow, will perform additional functionalities around monitoring the deployment for consistency etc.