WebAssembly
WebAssembly (Wasm) is a binary instruction format for a stack-based virtual machine, designed as a portable compilation target for programming languages. It enables high-performance applications to run in web browsers at near-native speed, allowing code written in languages like C, C++, and Rust to be executed on the web. It complements JavaScript by providing a low-level, efficient alternative for compute-intensive tasks.
Developers should learn WebAssembly when building performance-critical web applications, such as games, video editing tools, or scientific simulations, where JavaScript may be too slow. It's also useful for porting existing codebases from languages like C++ to the web without rewriting them in JavaScript. Additionally, it enables secure sandboxed execution of untrusted code in web and server environments.