ession for the peer <code>app</code> label to be used in an outbound configuration is
<code>upstream_peer.labels['app'].value</code>.</p><p>For more information, see <a href=/v1.16/docs/reference/config/proxy_extensions/stats/>configuration reference</a>.</p><nav id=see-also><h2>See also</h2><div class=see-also><div class=entry><p class=link><a data-skipendnotes=true href=/v1.16/docs/tasks/observability/metrics/classify-metrics/>Classifying Metrics Based on Request or Response</a></p><p class=desc>This task