Phoenix is the web development framework for Elixir, and LiveView is a Phoenix service that allows interactive page flows without JavaScript.

The LiveView project has swept through the Elixir community like wildfire. It takes traditional web development, which focuses on individual tasks that render HTML, and flips the model on its head. Instead, LiveView lets a programmer build a data structure in memory. Then, the user renders the data as a string, and any changes to the data structure automatically trigger a render.

The end result is that the developer’s focus shifts from things that are difficult, like managing concurrency or IO, to something that programmers are good at, writing small functions to change state.