dition to monitoring the behavior of services within a mesh, it is also important to monitor the behavior of the mesh itself. Istio components export
metrics on their own internal behaviors to provide insight on the health and function of the mesh control plane.</p><h3 id=proxy-level-metrics>Proxy-level metrics</h3><p>Istio metrics collection begins with the sidecar proxies (Envoy). Each proxy generates a rich set of metrics about all traffic passing through the proxy (both
inbound and outbound). The proxie