Currently, our app is returning a hard-coded string response directly from the Ruby code, which is not ideal. We will learn how to separate the "view" from the application logic and move it to a different part of the codebase.

However, before that, we need to understand a core piece of infrastructure in Rails: Rack, both the protocol and the gem.

Let's move on to the next lesson, where we will dive deep into Rack to understand how it works.