Envoy is a big part of the solution, yes. But it isn't the only component. A control plane layer, including an auth component and an adaptable policy enforcemen

Envoy is a big part of the solution, yes. But it isn't the only component. A control plane layer, including an auth component and an adaptable policy enforcement and telemetry collection component, is included as well. More info is available in the overview doc here: https://istio.io/docs/concepts/what-is-istio/overview.html https://istio.io/docs/concepts/what-is-istio/overview.html