by connecting to IoT hub and IoT Edge via "virtual kubelet."
Manage Azure IoT Edge deployments with Kubernetes | Blog | Microsoft Azure
"...leverage the Virtual Kubelet project which allows Kubernetes nodes to be backed by other services and make direct use of Kubernetes primitives. We implemented an IoT Edge provider, depicted by blue boxes in the below diagram, that transforms Kubernetes manifests to IoT Edge deployment manifests. A IoT Edge manifest can use tags to target on-prem edge devices whose configuration can be updated with a single kubectl command"