One of the Istio service mesh’s most popular and robust features is its advanced observability. Because all service-to-service communication is routed through Envoy proxies, and Istio’s control plane is able to gather logs and metrics from these proxies, the service mesh can provide us with deep insights about the state of the network and the behavior of services. This provides operators with unique ways of troubleshooting, managing, and optimizing their services, without imposing any additional burdens on application developers.