Node.js is a leading-edge event-driven system, which is used to develop scalable applications. It uses Google's V8 JavaScript Engine and it handles HTTP requests and responses between a web server and a huge number of Internet users more effectively than any traditional system. What makes Node.js one of a kind is the fact that unlike traditional systems that handle the info in large hunks, it processes everything in little bits. As an illustration, when a user needs to fill out several fields on a website, Node.js processes the info from the first field once it is entered, utilizing the server processing time more effectively. In contrast, other platforms wait for all the fields to be filled out and while the info from them is being processed, requests from other users remain in the queue. The difference may be negligible for a single user, but it indeed does make a difference if a huge number of people are navigating a website at the very same time. A few examples of Internet sites where Node.js can be employed are dining reservation portals, online chat rooms or interactive browser-based game portals, in other words sites that support quick real-time interaction.