WASM from Zero

About this course

WASM from Zero is a hands-on introduction to WebAssembly for engineers who want to ship fast, portable, sandboxed code that runs anywhere: the browser, the edge, the server, and embedded devices. You will learn what WebAssembly is, why it was designed, how it relates to Rust, and how to compile Rust libraries to .wasm modules that can be invoked from JavaScript, Python, or any host language. The course walks through the toolchain (rustc target wasm32, wasm-bindgen, wasm-pack, wasmtime, wasmer), the WASM component model, WASI, and the security and performance trade-offs that make WebAssembly a compelling deployment target for data engineering, ML inference, plugin systems, and serverless workloads. By the end of this course, you will be able to build, package, deploy, and debug a Rust-to-WASM data processing module, embed it in a web page and a server runtime, and reason about when WASM is the right tool versus a native binary or a container. This is part of the Rust for Data Engineering specialization and assumes basic Rust familiarity from Rust From Zero.