platform portability

WebAssembly is not tied to any hardware architecture, so it can be executed on several different platforms without needing to re-compile. When a WASM module is executed, it is compiled to machine-native code either ahead-of-time (AOT) or just-in-time (JIT).

WASM runtimes such as Chrome’s V8, Wasmtime or Wasmer perform this compilation automatically. I can see this becoming useful in scenarios where your code gets moved automatically from a central cloud instance to an edge compute network when a spike in traffic causes a certain module to be pummeled by incoming requests.