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Web technology
WebAssemblydevelopment expertise.
A binary instruction format for stack-based virtual machines enabling near-native performance.
Category
Web
Learning curve
Hard
Introduced
2017
Overview
Where WebAssembly fits in a modern product.
WebAssembly (Wasm) is a binary instruction format for a stack-based virtual machine that enables high-performance applications on web pages. It's designed as a portable compilation target for languages like C/C++/Rust.
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Language Agnostic
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Sandboxed
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Portable
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Small Binaries
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Parallelism
Product use cases
What teams build with WebAssembly.
The technology is most valuable when its strengths match the product, team and operating context.
Performance-critical Code
Game Engines
Media Editing
CAD Apps
Blockchain
Scientific Computing
Engineering assessment
Strengths and trade-offs, considered together.
Technology selection should account for product requirements, team capability, ecosystem maturity and long-term ownership.
Strengths
- Near-native performance
- Language flexibility
- Security sandbox
- Portable execution
- Small binaries
- Deterministic performance
Considerations
- Steep learning curve
- Limited DOM access
- Tooling complexity
- Debugging challenges
Getting started
Choose language (Rust/C++), set up toolchain, compile to Wasm, and integrate with JavaScript.
Best practices
Optimize for size, minimize JS-Wasm boundary crossings, implement proper memory management, use threads carefully.
Ecosystem
Wasm ecosystem includes compilers (Emscripten), runtimes (Wasmtime), languages (Rust), and frameworks (Blazor).
Related technologies
Explore the surrounding ecosystem.
Compare adjacent frameworks, platforms and tools that commonly support similar product goals.