The document discusses 5 reasons to use the content management system Drupal: 1. Security - Drupal is designed with robust security features like database encryption and granular user access controls. 2. Scalability - Drupal can accommodate growth through optimizations and server scaling abilities. Large sites like NASA.gov use Drupal. 3. Community - Drupal has a large global community of experts that provide support, modules, and new ideas. 4. Accessibility - Drupal allows building accessible sites that are perceivable, understandable, operable and robust. 5. User experience - Drupal provides a user-friendly interface for marketers and developers, along with features like drag-and-drop and workflows.