Express.js is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. Express provides a thin layer of fundamental web application features, without obscuring Node.js features that you know and love.
It is developed by TJ Holowaychuk on 16th November 2010. This is where Express.js shines and does the one job perfectly for which it was created, which is, creating API endpoints. It adds the functionality of middleware and routing with ease in a Node.js application.
