WebAssembly (Wasm) promises to change the nature of web applications. However, we should take a look at the needs of the apps decoupled from the browser. Enter open source NGINX Unit. Unit is an application runtime for web apps and APIs. It handles the HTTP(S) front end, request routing and serving of assets, including the hand-off of dynamic requests. In short, Unit decouples the HTTP server from the application process. And it’s an excellent fit for Wasm’s sandboxed execution and linear memory byte streams.