The goal for WASI is a secure-by-default capabilities model for access to system APIs. It's also an open collaborative cross-vendor specification with at least

The goal for WASI is a secure-by-default capabilities model for access to system APIs. It's also an open collaborative cross-vendor specification with at least four different independent implementations. MSIL/CIL is similar in some ways, but it's still largely only supported by Microsoft and doesn't sandbox binaries the same way. It's an inspiration to We assembly, but not a feasible alternative to it. Similar to Google's PNaCl bytecode. Some more detail here: https://hacks.mozilla.org/2019/03/standardizing-wasi-a-webassembly-system-interface/ https://hacks.mozilla.org/2019/03/standardizing-wasi-a-webas... https://hacks.mozilla.org/2019/11/announcing-the-bytecode-alliance/ https://hacks.mozilla.org/2019/11/announcing-the-bytecode-al... "secure-by-default foundations for native development that are portable and scalable."