>The Wasm runtime powered by V8 in Envoy has been shipped since Istio 1.5 and there have been a lot of improvements since then.</p><h3 id=wasi-supports>WASI supports</h3><p>First, some of the WASI (WebAssembly System Interface) system calls are now supported. For example, the <code>clock_time_get</code> system call can be made from Wasm programs so you can use <code>std::time::SystemTime::now()</code> in Rust or <code>time.Now().UnixNano()</code> in Go in your Envoy Wasm extensions, just like any other nati