Django is a high-level Python web framework that follows the Model-Template-View (MTV) architectural pattern, enabling rapid development of secure and maintainable websites. Built with the philosophy of "batteries included," Django provides a comprehensive toolkit including an ORM for database interactions, a powerful template engine, robust authentication and authorization, and extensive middleware capabilities. Understanding Django's lazy evaluation philosophy — where QuerySets are only evaluated when explicitly needed — is crucial for writing efficient code, as this design pattern allows chaining multiple filters without triggering database queries until the final result is accessed or iterated.