Fabrizio Lazzaretti

Your Workloads Can Lose Some Weight: WebAssembly on Kubernetes

On January 31, 2026, Linus Basig and I presented at FOSDEM ‘26 in Brussels in the Virtualization and Cloud Infrastructure DevRoom. The room was packed with around 100 attendees, with people waiting outside unable to get in!

Video Screenshot

Key Takeaways

  • Lighter workloads: WebAssembly offers a radically lighter approach to running workloads on Kubernetes alongside existing containers
  • Seamless integration: WASM integrates through containerd shims, making adoption straightforward
  • End-to-end example: Walked through a Rust example from code to deployment on Kubernetes
  • Production ready: Discussed real-world CNCF projects already using WASM in production
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Fabrizio Lazzaretti
Managing Consultant | CNCF Ambassador

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