Universal Links, App Links (aka Deep Links) are pretty complicated. Let me show you how to serve the server verification from your Phoenix app.
Expose your Elixir / Phoenix application to the internet using a free ngrok account. No more messing with dynamic hostnames.
Server-side render Elm applications with Phoenix using a STDIO-based IO server, similar to the React approach.
Server-side render React components with Phoenix using react-stdio and OTP for isomorphic Elixir applications.
Use Guardian to manage multiple browser sessions in your Phoenix app, such as separate user and admin logins.
Embed permissions into JWT tokens using Guardian for fine-grained authorization in your Phoenix application.
Set up API authentication with Guardian in your Phoenix application using JWT tokens.
A straightforward guide to setting up browser authentication in your Phoenix application using Guardian.