Structure of a WordPress page layout

Typically, posts or pages created in WordPress consist of five common sections. Most of these components will be common across all the pages in the website. In web applications, we also separate the common layout content into separate views to be included inside other views. It's important for us to focus on how we can adapt the layout into web application-specific structure. Let's visualize the common layout of WordPress using the following image:

Having looked at the structure, it's obvious that the Header, Footer, and the Main Content areas are mandatory even for web applications. However, the Footer and Comments section will play a less important role in web applications, compared to web pages. The Sidebar is important in web applications, even though it won't be used with the same meaning. It can be quite useful as a dynamic widget area.