figure at the mesh-wide level what namespaces the Istio control plane should watch and process. For these namespaces in the Istio service mesh, you can create Sidecar resources globally or per namespace to further control what gets pushed to the sidecar proxies. Let us add <code>Bookinfo</code> services to the <code>ns-y</code> namespace in the mesh as shown in the diagram below. <code>discoverySelectors</code> enables us to define the <code>default</code> and <code>ns-y</code> namespaces are part of the me