Node.js is an open-source, event-driven system, which uses Google's V8 JavaScript Engine. It’s used by scalable web applications that require real-time interaction between a server and the worldwide web users and can substantially speed up the overall performance of any website that’s using it. Node.js is designed to handle HTTP requests and responses and constantly delivers tiny amounts of info. For example, if a new user fills a signup form, the moment any info is inserted in one of the boxes, it is submitted to the server even if the remaining boxes are not filled and the user hasn’t clicked on any button, so the information is processed a lot faster. In contrast, conventional systems wait for the whole form to be filled and one sizeable chunk of information is then delivered to the server. No matter how little the difference in the information processing time may be, things change if the website expands and there are plenty of people using it at the same time. Node.js can be used for booking portals, real-time browser-based games or live chats, for example, and lots of corporations, among them Yahoo, eBay and LinkedIn, have already incorporated it into their services.