quests because it
required extensions to be out-of-process. So, we&rsquo;re moving to a model that
enables extension directly in the proxies instead.</p><p>Most of Mixer’s use cases for policy enforcement are already addressed with
Istio&rsquo;s <a href=/v1.13/docs/concepts/security/#authentication-policies>authentication</a>
and <a href=/v1.13/docs/concepts/security/#authorization>authorization</a> policies, which
allow you to control workload-to-workload and end-user-to-workload authorization
directly i