squo;s namespace.</p><p>Manual injection directly modifies configuration, like deployments, and injects the proxy configuration into it.</p><p>When enabled in a pod&rsquo;s namespace, automatic injection injects the proxy configuration at pod creation time using an admission controller.</p><p>Injection occurs by applying a template defined in the <code>istio-sidecar-injector</code> ConfigMap.</p><h3 id=manual-sidecar-injection>Manual sidecar injection</h3><p>To manually inject a deployment, use <a href=/v1.