Cloudflare has announced experimental support for WASI (WebAssembly System Interface) on its Workers platform, along with wrangler2 to make it easier to work with. WASI aims to provide a standard interface that any language compiling to WebAssembly can target. This enables developers to write applications that not only interoperate with any WebAssembly runtime implementing the standard but also any POSIX compliant system. The announcement includes examples of how this works in practice, such as deploying CLI apps in the cloud and using WASI from within a JavaScript Worker.