WordPress architecture

The WordPress architecture can be divided into four major parts:

Let's look into the individual sections:

• Display: This contains the HTML, CSS, and JavaScript files visible to the users.
• Theme/Templates: This includes forms, theme files, different WordPress pages, and sections such as comments, headers, footers, and the error page.
• WP-Engine: This engine is responsible for the core functions of the entire CMS, for example, RSS feeds, communicating with the database, setup, file management, media management, and caching.
• WP-Backend: This includes the database, PHP mailers cron jobs, and the filesystem.

Now, let's look into the directory structure.