This document discusses design patterns that are commonly used in Django projects. It begins by explaining what design patterns are and their benefits. It then provides examples of how several design patterns from the Gang of Four book map to components in Django, such as the Observer pattern mapping to Django signals. The document also discusses whether Django follows the MVC pattern and describes model, view, and template patterns like custom model managers, context enhancers, and template inheritance trees. It concludes by providing advice on properly applying patterns.