egin the locality load balancing tasks, you must first
<a href=/v1.12/docs/setup/install/multicluster>install Istio on multiple clusters</a>. The
clusters must span three regions, containing four availability zones. The
number of clusters required may vary based on the capabilities offered by
your cloud provider.</p><div><aside class="callout tip"><div class=type><svg class="large-icon"><use xlink:href="/v1.12/img/icons.svg#callout-tip"/></svg></div><div class=content>For simplicity, we will assume that the