Django is a powerful web development framework for Python that enables developers to rapidly build secure web applications. It has been around since 2005, and has become increasingly popular over the years as a platform for developing web applications. Django’s popularity is largely due to its robust features, scalability, and ease of use.

Pros

• It is fast and secure: Django is built with security and speed in mind, with features such as automatic SQL injection protection and CSRF protection.
• It has a wide range of built-in features: Django comes with a range of features and tools, such as an object-relational mapper (ORM), an admin interface, and a template system.
• It is highly scalable: Django can easily scale to meet the needs of large applications.
• It is highly customizable: Django allows developers to customize the framework to meet their specific needs.
• It is well documented: Django documentation is fully written and shared publicly
• It is widely supported by many libraries and packages: There are tons of Django packages for developers to fast develop web applications without reinventing the wheel. You can find the best packages in our blog post

Cons 

• It is not as flexible as some other frameworks: Django is designed to be opinionated, which can limit the flexibility of the framework.
• It has a steep learning curve: Django has a lot of features, which can make it difficult to learn.
• It can be slow: Django can be slow when compared to other frameworks, such as Node.js.

Why is the Django framework so widely-used?

When it comes to features, Django offers a wide range of options for developers. It includes a rich-features

• ORM (object-relational mapper) which makes it easy to create and interact with databases
• An extensive set of libraries that enable developers to quickly and easily develop web applications with minimal effort.
• Numerous features that allow developers to quickly release web applications in a short amount of time, such as authentication and authorization, content management, and site administration.

Another reason why Django is so common is its ease of use.

• Module Designed philosophy: developers can quickly create and customize applications without having to learn a complex programming language.
• A built-in development server that makes it easy to quickly test and debug applications.

When it comes to scalability, Django is a great choice for developers.

• Highly scalable and can handle large amounts of traffic without any problems.
• Highly extensible, which means that developers can easily add new functionality to their applications without having to rewrite existing code.

What are famous companies using Django?

Famous companies such as Instagram, Pinterest, and Mozilla use Django for their web applications. 

- Instagram: Instagram uses Django as their main web framework. They chose Django due to its scalability and flexibility, as well as its comprehensive set of libraries and frameworks. Instagram also uses other web frameworks such as Flask and Pyramid, but Django remains the primary choice.

- Pinterest: Pinterest is another well-known site that makes use of Django. They chose Django due to its scalability and the ability to quickly develop complex web applications. Pinterest also uses frameworks such as Flask and Pyramid, but Django remains the primary choice.

- Disqus: Disqus is a commenting platform which makes use of Django. They chose Django due to its ease of use and extensibility. Disqus also uses other web frameworks such as Flask and Pyramid, but Django remains the primary choice.

- Mozilla: Mozilla is one of the best web browsers which make use of Django. They chose Django due to its scalability and the ability to quickly develop complex web applications. Mozilla also uses other web frameworks such as Flask and Pyramid, but Django remains the primary choice.

- Bitly: Bitly is a popular URL shortening service which makes use of Django. They chose Django due to its scalability and flexibility, as well as its comprehensive set of libraries and frameworks. Bitly also uses other web frameworks such as Flask and Pyramid, but Django remains the primary choice.

Is there any Django limitation?

Despite its many advantages, there are some limitations to Django as well.

• One limitation is that it is not as easy to customize as other frameworks, since it follows a specific set of conventions.
• Django applications can be slow to load and may not be able to handle large amounts of traffic.
• Django does not support some of the more advanced web technologies, such as websockets, asynchronous and server push.

However, Django 4.1, which is released 2022, supports asynchronous handlers for class-based views; view subclasses now may define async HTTP method handlers, according to release notes

Regarding to the websocket, there is a famous package - Django Channel

Conclusion

Overall, Django is a high-performance and widely-used web development framework for Python that enables developers to quickly build secure and scalable web applications. It is designed to be highly scalable and extensible, and it comes with a wide range of features that make it easy to create and customize applications. Additionally, it is used by some of the world’s most famous companies, such as Instagram, Pinterest. However, there is a small limitation to Django as well, that is the lack of customization options.