 be written in several programming languages.</li></ul><p>This <a href=https://youtu.be/XdWmm_mtVXI>video talk</a> is an introduction about architecture of WebAssembly integration.</p><h2 id=high-level-architecture>High-level architecture</h2><p>Istio extensions (Proxy-Wasm plugins) have several components:</p><ul><li><strong>Filter Service Provider Interface (SPI)</strong> for building Proxy-Wasm plugins for filters.</li><li><strong>Sandbox</strong> V8 Wasm Runtime embedded in Envoy.</li><li><strong>Host A