A CMS, or Content Management System, is software that allows users to manage websites and content without needing to know coding. It is used to easily create, edit, and publish web pages, blog posts, and media files like images and videos. Popular CMS platforms include WordPress, Joomla, and Drupal, which are easy to install and customize. By using a CMS, businesses and individuals can manage blogs, e-commerce sites, and even portfolios. These tools are user-friendly, making website management accessible even for people without technical skills.