WebAssembly is a sandboxing technology which can be used to extend the Istio proxy
Extensibility
Documentation Concepts Extensibility WebAssembly is a sandboxing technology which can be used to extend the Istio proxy (Envoy). The Proxy-Wasm sandbox API replaces Mixer as the primary extension mechanism in Istio. WebAssembly sandbox goals: Efficiency - An extension adds low latency, CPU, and memory overhead.
https://istio.io/latest/docs/concepts/wasm/
C++ Proxy-Wasm plugin
istio-ecosystem/wasm-extensions
Contains miscellaneous Wasm extensions for Istio. Contribute to istio-ecosystem/wasm-extensions development by creating an account on GitHub.
https://github.com/istio-ecosystem/wasm-extensions/tree/master/example

Seonglae Cho