Django is a high-level, open-source web framework written in Python. It is designed to help developers build secure, scalable, and maintainable web applications quickly. Django follows the Model-View-Template (MVT) architectural pattern and emphasizes reusability, pluggability, and rapid development.

• Rapid Development: Django comes with many built-in features, allowing developers to build applications faster without reinventing the wheel.
• Security: Django has built-in protection against common vulnerabilities like SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF).
• Scalability: It supports the creation of highly scalable applications, capable of handling high traffic with ease.
• Extensibility: Django is designed to be modular, allowing easy integration of third-party libraries and applications.
• Community Support: Django has a large and active community, which ensures regular updates, security patches, and a wealth of documentation.

With Django, developers can focus more on writing application-specific code while the framework handles the heavy lifting in terms of security, scalability, and structure.