e individual
<a href=/v1.12/docs/reference/glossary/#workload-instance>workload instance</a> level.</li></ul><h2 id=metrics>Metrics</h2><p>Metrics provide a way of monitoring and understanding behavior in aggregate.</p><p>To monitor service behavior, Istio generates metrics for all service traffic in, out, and within an Istio service mesh. These metrics provide information on
behaviors such as the overall volume of traffic, the error rates within the traffic, and the response times for requests.</p><p>In ad