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 live interaction between a server and the online users and can significantly enhance the performance of any site that’s using it. Node.js is intended to process HTTP requests and responses and constantly supplies little amounts of info. For example, if a new user fills a subscription form, once any information is inserted in one of the boxes, it’s forwarded to the server even if the other fields are not filled out and the user hasn’t clicked on any button, so the information is processed much faster. In contrast, conventional platforms wait for the entire form to be filled out and one big hunk of information is then delivered to the server. Irrespective of how little the difference in the processing time may be, things change when the website grows bigger and there are many people using it at the same time. Node.js can be used for booking sites, real-time browser games or live chats, for example, and plenty of corporations, including Yahoo, eBay and LinkedIn, have already integrated it into their services.