WASI (WebAssembly System Interface)

WASI (WebAssembly System Interface) is a standardized set of APIs that enables WebAssembly programs to interact with the underlying operating system, such as file systems, network, and time. It provides a consistent way for WebAssembly code to perform system tasks across different environments—like cloud servers, desktops, or embedded devices—without needing to be tailored for each platform. Essentially, WASI acts as a bridge, allowing high-performance, portable code to access system features securely and reliably, thus expanding WebAssembly's use beyond browsers into server and application contexts.