Maybe you are reading it differently than me, but when they refer to the same binaries, as if I managed it myself, as being the pieces they use, it definitely seems like the open source project being used.
> The control plane is the unified endpoint for your cluster. You interact with the control plane through Kubernetes API calls. The control plane runs the Kubernetes API server process (kube-apiserver) to handle API requests.
> A node runs the services necessary to support the containers that make up your cluster's workloads. These include the runtime and the Kubernetes node agent (kubelet)
