elegate the access control decision to an external authorization service.</p><p>The <code>CUSTOM</code> action allows you to integrate Istio with an external authorization system that implements its own custom
authorization logic. The following diagram shows the high level architecture of this integration:</p><figure style=width:100%><div class=wrapper-with-intrinsic-ratio style=padding-bottom:48.57376397295984%><a data-skipendnotes=true href=/v1.9/blog/2021/better-external-authz/external_authz.svg title="E