ref=/v1.18/docs/tasks/observability/metrics/classify-metrics/>request classification</a> filters. This enables operators to configure new attributes for use in telemetry, based on request information. A primary use case for this feature is labeling of traffic by API method.</li><li><em><strong>Added</strong></em> an experimental <a href=/v1.18/docs/tasks/observability/distributed-tracing/mesh-and-proxy-config/>mesh-wide tracing configuration API</a>. This API provides control of trace sampling rates, the <a