App Shell Model

The App Shell Model is a design approach for building web applications that enhances speed and user experience. It separates the core structure of the app (the "shell") from dynamic content. When you first load the app, the shell loads quickly and provides a consistent layout, while content is loaded separately in the background. This means users can interact with the app faster, as they don’t have to wait for everything to load all at once. It’s particularly useful for mobile and progressive web apps, as it creates a smoother experience similar to native applications.