icy across regions. Since zone and sub-zone
failover is supported by default this only needs to be specified for
regions when the operator needs to constrain traffic failover so that
the default behavior of failing over to any endpoint globally does not
apply. This is useful when failing over traffic across regions would not
improve service health or may need to be restricted for other reasons
like regulatory controls.</p>

<table class="message-fields">
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr