What are some key features of Node.JS?

Here are the key features of Node.JS: It is fast in executing code. It is extremely scalable. It uses the JavaScript library. There is no buffering of knowledge.

What are the technologies used in MEAN?

The following technologies are used in MEAN: MongoDB – A schema less NoSQL database system Express JS – Framework used for building applications in Node AngularJS – JavaScript framework Node.js – A server-side JavaScript-based execution environment