Stranger Domains: Embedding your app across the web - Nathan Hessler | ElixirConf US

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Stranger Domains: Embedding your app across the web - Nathan Hessler | ElixirConf US 2025

Stranger Domains: Embedding your app across the web - Nathan Hessler | ElixirConf US 2025

This talk was recorded at ElixirConf US 2025. If you’re curious about our upcoming event, check https://elixirconf.com✨
LiveView is great—until it has to live somewhere else.

Whether you’re integrating with a third-party site, building a white-label solution, or exposing your app as a widget, operating outside your own domain introduces a new class of problems. LiveView starts to feel boxed in, and the usual tooling for cookies, headers, and sockets doesn’t quite behave as expected.

In this talk, we’ll dig into the challenges and tradeoffs of embedding Phoenix apps into third-party domains. And when to choose between iframes and custom elements as delivery mechanisms.

Key Takeaways:

Understand why LiveState offers more flexibility than LiveView for embedded use cases

Learn the tradeoffs between iframes and custom elements when delivering Phoenix-powered components

Gain practical tools for managing session state, cross-domain communication, and security concerns

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