Node.js is a robust back-end environment of JavaScript that allows programmers building web applications, more specifically, writing Server-side scripts. Providing a rich library of diverse JS modules, Node.js simplifies applications' development to a great extent. Another notable advantage of Node.js is its fastness in code execution. Node.js is licensed under MIT standards. Due to all the benefits Node.js provides, its demand rose by about 57% over the past years, appearing in the top 10 tech searches.