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A WebAssembly runtime is an execution environment that loads, validates and securely runs Wasm modules, providing memory management, import/export interfaces and host APIs. It mediates between isolated module code and the host, balancing performance and sandboxing. Use cases span browsers, server-side runtimes and edge platforms.
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A WebAssembly runtime loads, validates, and executes portable WebAssembly bytecode in a controlled environment.
WebAssembly grew from collaboration among Mozilla, Google, Microsoft, and Apple to enable fast and safe execution in browsers. The organizations published the first public standard in 2017; the W3C WebAssembly Community Group continues its standardization.
Compile code into a WebAssembly module, load it into a runtime, and grant it selected resources and interfaces. The runtime executes the validated bytecode.
Portable bytecode runs independently of its source language.
Validation, instantiation, and controlled imports connect a module to its runtime.
Runtimes run in browsers, servers, or embedded systems and limit capabilities.
WebAssembly runtimes bring fast, portable components to browser and server applications.
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