WebAssembly (WASM) Usage Scenarios and Future Trends

Introduction: After learning basic concepts of WebAssembly (WASM), this chapter explores its usage scenarios and future development trends.

Scenarios: WASM is used to accelerate browser applications, provide sandbox security, enable plugin systems, and allow language interoperability. Major fields include browsers, cloud‑native, mobile, IoT, and blockchain, with statistics from “The State of WebAssembly 2022”.

Web environment: WASM runs in browsers by compiling languages such as C/C++, Rust, Go to low‑level bytecode modules. Examples include video decoding, GUI controls, Qt for WebAssembly, Figma performance improvements, and game engines like Doom 3. Code snippets illustrate WebAssembly objects such as WebAssembly.Memory , ArrayBuffer , and WebAssembly.Instance .

Cloud‑native: WASM can be packaged as containers or run via Krustlet on Kubernetes, enabling lightweight workloads, edge computing, and serverless functions. Docker+WASM, WasmEdge, Fastly Compute@Edge, Cloudflare Workers, and Envoy/Wasm extensions are discussed.

Edge and IoT: WASM’s small size and performance make it suitable for edge devices, Tizen smart TVs, VelaOS, and AIoT frameworks such as Waft.

Blockchain: eWASM is proposed as a next‑generation virtual machine for Ethereum, offering speed, pre‑compilation, and interoperability; other platforms like Cosmos and Polkadot also adopt WASM.

Other ecosystems: Fluvio SmartModules, Deno runtime, and wasmCloud illustrate further WASM applications.

Future directions: Improving developer experience, advancing the standard (SIMD, exception handling, GC), expanding language support, and fostering community and governance are essential for broader adoption.

Conclusion: WASM is an emerging technology with broad applicability across browsers, cloud‑native, edge, and blockchain, representing a promising “blue ocean” for future innovation.