y.kubernetes.io/region</code> is used to match the region metadata of an endpoint, which maps to Kubernetes node label <code>topology.kubernetes.io/region</code> or the deprecated label <code>failure-domain.beta.kubernetes.io/region</code>.</li>
<li><code>topology.kubernetes.io/zone</code> is used to match the zone metadata of an endpoint, which maps to Kubernetes node label <code>topology.kubernetes.io/zone</code> or the deprecated label <code>failure-domain.beta.kubernetes.io/zone</code>.</li>
<li><code>t