As you likely know by now, WebAssembly, or wasm, is an efficient, cross-platform, cross-language way to run code almost anywhere, including in a browser and on a server—even in a database. Cosmonic is a commercial platform-as-a-service (PaaS) for wasm modules. It builds on the open-source wasmCloud. This technology preview starts with a quick overview of wasm, then we’ll set up wasmCloud and Cosmonic and see what we can do with them.
What is wasm?
WebAssembly (wasm) is a “binary instruction format for a stack-based virtual machine.” It’s a portable compilation target for programming languages, including C, C++, C#, Rust, Go, Java, PHP, Ruby, Swift, Python, Kotlin, Haskell, and Lua; Rust is often the preferred language for wasm. There are three wasm-specific languages: AssemblyScript, Grain, and Motoko. Wasm targets include browsers (currently Chrome, Firefox, Safari, and Edge), Node.js, Deno, Wasmtime, Wasmer, and wasm2c.
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