es down and responsiveness goes up.</strong> Communication between components becomes guaranteed, and not subject to gRPC size limits. Caches can be shared safely, which decreases the resource footprint as a result.</p></li></ul><p>istiod unifies functionality that Pilot, Galley, Citadel and the sidecar injector previously performed, into a single binary.</p><p>A separate component, the istio-agent, helps each sidecar connect to the mesh by securely passing configuration and secrets to the Envoy proxies. Wh