Keynote: What is a Component (and Why)? - Luke Wagner, Distinguished Engineer, Fastly

What people said

hectaman · 2026-06 · Recommendation

I don't think it's fair to say this work has happened in the shadows. I work on CNCF wasmCloud, and I know how hard we try to make this content available. - Many standing meetings organized around SIGs, all on the public community calendar: [LINK] - A dedicated Zulip: [LINK] - Conferences organized around exactly these topics: Wasm Day, WasmCon, Wasm I/O, and the Bytecode Alliance Plumbers Summit - CNCF projects: wasmCloud, Spin - Blogs, many with recordings, summaries, and transcripts: [LINK] , [LINK] , [LINK] If you want the architectural direction straight from the source, Luke Wagner's keynotes are the best place to start: - "What is a Component (and Why)?" (WasmCon 2023): [VIDEO] - "The Path to Components": [LINK] - "Towards a Component Model 1.0" (Wasm I/O 2026): [LINK] I mean this, though - what else would you like to see to try and make the content and process more accessible? Are there communities that are doing this really well that we could use for inspiration?

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jauntywundrkind · 2024-05 · Recommendation

WASI preview1 modules aren't very modular. You can't compose them. All you can do is one shot compile & bundle the world into one massive module. You can't use that module to power another module, it basically has to be standalone. Luke Wagner has a talk going through WASI 0.2 that's pretty excellent. The title is What is a component (and why)? , and we go step by step through the properties component-model enables: a Standard Portable Lightweight Finely-Sandboxed Cross-Language Compositional Module . You get basically none of these without component-model. [VIDEO] The properties are amazing. Not only do we get Cross-Language, not only do we get composable, but ideally we get very very lightweight sandboxed processes that can safely re-use modules already loaded by the runtime. This could be such an incredible way to sandbox actively, with a base of supportinginrsriss dwarfing anything computer science has done before. The wasm view here has been so shortsighted & brutal. Once again, the hype cycle has gotten big enough that a lot of people are very angry & actively trying to tear down & discredit. Like systemd, like K8s. With not even a passing attempt to show balanced views in the process, no nods to the possible or good, just remorseless total war. This is the famous typical dripping sense of disdain, arising again in angry stirrings, here now to rage against component-model. Holy shit yes is it ambitious and hard. Yes you should be afraid of failure, of this crew not pull

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boomskats · 2024-01 · Recommendation

I thought this keynote presentation[0] by Luke Wagner at Wasmcon was great and covered it very well. I also found the WIT Format design doc[1] in the component model repo to be the most complete explanation of how it's all going to hang together. [0]: [VIDEO] [1]: [LINK]

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