File uploads are probably one of the most common features you'll end up having to implement over the course of a web application, so it's a good feature to use to cut our teeth on some of the other form handlers built into Elixir. This will also provide us a nice opportunity to start messing around with some of the custom options for configuring our Phoenix application (since we'll need to tell Phoenix that it's okay to serve certain types of files out of certain folders that aren't in our current application layout), as well as an opportunity to really dive into Elixir's file-handling functionality.