A CMS allows users to manage website content through an administration area. Instead of manually editing HTML files, an administrator can log into a dashboard and create pages, publish articles, upload images, and manage users.

A typical CMS might contain:

Dashboard
Pages
Blog posts
Categories
Media library
Users
Roles and permissions
Site settings
Navigation menus
SEO configuration

The CMS then stores this information in a database and dynamically displays it on the website.