Content Management Systems (CMS) allow individuals to create and manage website content without advanced coding knowledge. The document discusses several popular CMS options including WordPress, Joomla, and Drupal. It compares their features such as ease of use, extensibility through plugins/themes, and suitability for different types of websites. While each CMS has strengths, WordPress is highlighted as the easiest to use with an extensive library of plugins and themes, making it ideal for most basic websites.