EnvoyFilters

EnvoyFilters are a feature in the Istio service mesh, which helps manage communication between microservices in cloud applications. They allow users to customize and extend the behavior of Envoy, a powerful proxy that handles network traffic. With EnvoyFilters, developers can modify how requests and responses are processed, enabling features like adding headers, altering routes, or implementing custom authentication. This flexibility helps improve performance, security, and observability of services without modifying the actual application code, making it easier to adapt to changing requirements in a microservices architecture.