Express.js is a widely used web application framework for Node.js that offers many benefits for us. And it provide many upsides that's are : (1)Fast and Lightweight (2) Middleware support (3) Efficient Routing (4)Highly Customizable Overall, Express.js is a powerful and flexible framework that offers many benefits for web developers(us). Its efficiency, flexibility, and ease-of-use make it a popular choice for building web applications.

Ease of using the package in combination with other NPM packages to develop a backend in javascript

Best thing I like about Express JS that you can easily start and create a server with very less code. Handling for request and response is also very intuitive.