Yeah, we took a bet that writing our compiler, simulator, etc. in Rust and architecting correctly so it could compile to native and WASM would let us run native and in the browser too, and we’re pretty thrilled with how it turned out.
We just shipped 1.0, but this slightly older blog post goes into the architecture a bit more: https://devblogs.microsoft.com/qsharp/introducing-the-azure-...