**To update a virtual service** The following ``update-virtual-service`` example uses a JSON input file to update a virtual service to use a virtual router provider. :: aws appmesh update-virtual-service \ --cli-input-json file://update-virtual-service.json Contents of ``update-virtual-service.json``:: { "meshName": "app1", "spec": { "provider": { "virtualRouter": { "virtualRouterName": "vrServiceA" } } }, "virtualServiceName": "serviceA.svc.cluster.local" } Output:: { "virtualService": { "meshName": "app1", "metadata": { "arn": "arn:aws:appmesh:us-east-1:123456789012:mesh/app1/virtualService/serviceA.svc.cluster.local", "createdAt": 1563810859.474, "lastUpdatedAt": 1563820257.411, "uid": "a1b2c3d4-5678-90ab-cdef-11111EXAMPLE", "version": 3 }, "spec": { "provider": { "virtualRouter": { "virtualRouterName": "vrServiceA" } } }, "status": { "status": "ACTIVE" }, "virtualServiceName": "serviceA.svc.cluster.local" } } For more information, see `Virtual Services <https://docs.aws.amazon.com/app-mesh/latest/userguide/virtual_services.html>`__ in the *AWS App Mesh User Guide*.