oxy.io/>Envoy</a> proxy. Envoy is a high-performance
proxy developed in C++ to mediate all inbound and outbound traffic for all
services in the service mesh.
Envoy proxies are the only Istio components that interact with data plane
traffic.</p><p>Envoy proxies are deployed as sidecars to services, logically
augmenting the services with Envoy’s many built-in features,
for example:</p><ul><li>Dynamic service discovery</li><li>Load balancing</li><li>TLS termination</li><li>HTTP/2 and gRPC proxies</li><li>Cir