Node.js is a cutting-edge event-driven platform, which is used to build scalable apps. It’s built with Google's V8 JavaScript Engine and it processes requests and responses between a server and an immense number of users more efficiently than any conventional system. What makes Node.js exceptional is the fact that in contrast to traditional systems that handle the info in giant chunks, it handles everything in small bits. For instance, when a user has to fill in several fields on a site, Node.js processes the information from the first field the moment it is entered, utilizing the server processing time more efficiently. In comparison, traditional platforms wait for all the fields to be filled and while the information in them is being processed, requests from other users stay in the queue. The difference may be insignificant for a single user, but it really does make a difference when an enormous number of individuals are visiting a site all at once. A few examples of websites where Node.js can be applied are online dinner booking portals, chat rooms or interactive browser game portals, in other words sites that offer fast live communication.