AWS App Mesh introduces Agent for Envoy, a new component that monitors Envoy proxies and helps keep them healthy. Agent for Envoy also facilitates Envoy connection draining, helping make your applications more resilient to failures. AWS App Mesh is a service mesh that provides application-level networking to make it easier for your services to communicate with each other across multiple types of compute infrastructure. AWS App Mesh standardizes how your services communicate, giving you end-to-end visibility and options to tune for high-availability of your applications.
Source:: Amazon AWS