WordPress and Web Servers
WordPress functions as a web application on web servers, primarily using the LAMP stack (Linux, Apache, MySQL, PHP). Web servers serve web pages and utilize software like Apache or Nginx to handle requests. Configuration allows multiple sites on one server through virtual hosts (Apache) or server blocks (Nginx). Upon user requests, PHP processes data, often fetching from a MySQL database, and returns HTML, CSS, and JavaScript to the user's browser for display.
https://learn.wordpress.org/lesson/wordpress-and-web-servers/