WebAssembly (Wasm) has escaped the browser. With WASI, it runs on servers, at the edge, and in Kubernetes. And it’s changing how we think about deployment.
Wasm Beyond the Browser¶
WASI (WebAssembly System Interface) standardizes access to OS resources. A Wasm module starts in microseconds (vs. milliseconds for a container), is sandboxed, and platform-independent.
Edge Computing with Cloudflare Workers¶
Cloudflare Workers — code runs at 300+ edge locations around the world. Latency under 10 ms for users anywhere. Ideal for: A/B testing, personalization, geolocation-based routing, API gateway logic.
Wasm in Kubernetes¶
Experiments with Krustlet and Spin (Fermyon) — Wasm modules as workloads in K8s. Denser packing (thousands of instances on a single node), near-instant cold start. Still early stage, but the direction is clear.
Wasm Is the Future of Lightweight Compute¶
Containers won’t disappear, but for specific use cases (edge, serverless, plugin systems) Wasm is the better choice. Watch this space.
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