Why WebAssembly in Netlify Functions?
High-performance functions written in C/C++, Rust, Swift, and other languages can be easily compiled into WebAssembly. Those WebAssembly functions are much faster than JavaScript or Python commonly used in serverless functions.
However, if raw performance is the only goal, why not just compile those functions to machine native executables (Native Client or NaCl)? Netlify already runs these functions safely in AWS Lambda with the Firecracker microVM.
Our vision for the future is to run WebAssembly as an alternative lightweight runtime side-by-side with Docker and microVMs in the cloud
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