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WebAssembly vs. Python & JavaScript

A recent survey by DataDog found that most AWS Lambda serverless functions are written in JavaScript and Python.

However, it is also well known that those high-level languages are very slow. In fact, according to a paper published on Science , up to 60,000 times slower than the same programs written in C or C++.

Hence, while JavaScript and Python are great for simple functions, they are not suitable for computational intensive tasks, such as image, video, audio, and natural language processing, which are increasingly common in modern applications.

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