Extending Elixir with WebAssembly Components - Chris Nelson| ElixirConf US

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Extending Elixir with WebAssembly Components - Chris Nelson| ElixirConf US 2025

Extending Elixir with WebAssembly Components - Chris Nelson| ElixirConf US 2025

This talk was recorded at ElixirConf US 2025. If you’re curious about our upcoming event, check https://elixirconf.com✨
The WebAssembly Component model makes it much more practical to use WebAssembly for real world use cases. Now that support for the component model has landed in wasmex, we are able host and call WASM components from our Elixir applications. This makes it possible to host and execute code written in a wide variety of languages in a secure, sandboxed environment and interact with it using idiomatic Elixir. Would you like to allow users to customize your Elixir SAAS platform with user provided Python? Have you ever wanted to write a LiveView in Golang? The possibilities are only as limited as our imagination. In this session, we will introduce the wasm component model and see what it gives us. We’ll explore the wasmex library and how it integrates wasm components in Elixir. We’ll do it all with concrete code examples so you can see how everything works.

Key Takeaways:

The users will understand
wasm component model
improvements vs core wasm
how to host and call them from elixir
where and when they are useful

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