Topic summary
WebAssembly System Interface

Extracted from the Wikipedia article WebAssembly.
WASI
WebAssembly System Interface (WASI) is a simple interface (application binary interface (ABI) and application programming interface (API)) designed by Mozilla, which is intended to be portable to any platform. It provides features similar to the Portable Operating System Interface (POSIX), such as file input/output (I/O) constrained by capability-based security. There are additional proposed ABI/APIs.