Explore the implementation of Envoy Web Assembly (Wasm) filters for supporting Yahoo Headers in this 30-minute conference talk by Mrunmayi Dhume and Michael Cieplak. Gain insights into Verizon Media's on-prem Kubernetes platform, spanning 35 clusters across multiple data centers and serving approximately 2500 apps. Learn about the two ingress layers: Apache Traffic Server (ATS) and Istio Ingress based Envoy Proxy. Discover the process of porting ATS plugins to Envoy, focusing on the verification and generation of Yahoo Headers used for obtaining downstream client information. Understand the implementation of an Envoy Wasm filter using the Proxy Wasm standard to process these headers, enabling a seamless migration from ATS to Envoy. Delve into the filter implementation details and key learnings from this project, providing valuable knowledge for those interested in Kubernetes, Envoy, and Web Assembly in cloud-native environments.