The best part is the ease to use and convenience, also the publicly avaibalbe documentations and resources are very helpful for any developer. I also like the Express Generator that creates an empty project.

An easy-to-use framework in Nodejs to quickly build and customize robust web servers

Express js provide the simplicity and flexibility framework for building the node js server. Express js documentation is understandable for beginners; with the help of this, they can easily create a basic server.