o in the real world, and they told us that none of these were the case for the Istio control plane. So, in Istio 1.5, we&rsquo;ve changed how Istio is packaged, consolidating the control plane functionality into a single binary called <strong>istiod</strong>.</p><h2 id=history-of-the-istio-control-plane>History of the Istio control plane</h2><p>Istio implements a pattern that has been in use at both Google and IBM for many years, which later became known as &ldquo;service mesh&rdquo;. By pairing client and 