Node.js is an open-source, event-driven runtime environment, which uses Google's V8 JavaScript Engine. It is used for scalable apps that require real-time communication between a web server and the Internet users and can noticeably accelerate the performance of any Internet site that uses it. Node.js is designed to process HTTP requests and responses and ceaselessly provides little amounts of information. For instance, in case a new user fills a registration form, the second any information is entered in any of the fields, it’s submitted to the server even if the other boxes are not filled out and the user has not clicked on any button, so the info is processed a lot faster. In contrast, other platforms wait for the whole form to be filled and one big hunk of information is then forwarded to the server. No matter how tiny the difference in the information processing time may be, things change if the Internet site expands and there are numerous users using it at the same time. Node.js can be used by booking sites, interactive web browser video games or online chat programs, for example, and plenty of companies, among them Yahoo, eBay and LinkedIn, have already incorporated it into their services.