That’s the same framework that brought you the Twitter fail whale.Groupon was all one gigantic Ruby on Rails application. Today, a large portion of Netflix’s interface is running on Node. This more distributed approach was able to speed things up an alleviate stress on their servers. With Node, Netflix was able to break down pieces of their user interface into individual services. They too ran into problems with Java’s size and the time it required to develop. Over time, Netflix moved away from its more traditional structure into the cloud and started to introduce NodeJS. Like PayPal, Netflix started out using Java for just about everything. It’s pretty obvious that they like JavaScript over at PayPal. PayPal even went as far as to create and maintain their own version of Express, called KrakenJS. That means that most of what you see in your account is running on Node. The NodeJS version worked out so well, that they chose to use it in production and build all client-facing applications in Node going forward. During an overhaul of their account overview page, they decided to try building the page in Node at the same time as their usual Java development. PayPal has obviously been using JavaScript on the front end of their website for a long time, but that’s only the beginning. The online payment giant was one of the earliest adopters of NodeJS.

NodeJS is great of IoT because it’s light weight and efficient. Its one of Azure’s major features, and they’ve integrated Visual Studio support for Node. Microsoft has also developed a version of Node for Internet Of Things(IoT) applications. They thoroughly support Node on the Azure cloud platform. Recently, Microsoft has really embraced NodeJS. Actually, there has been talk of them creating an alternate version of NodeJS with the Edge engine. All browsers need to process and execute JavaScript efficiently, so Microsoft has developed and maintains its own JavaScript engine for Edge. Okay, so you’re probably not going to find JavaScript powering Windows anytime soon, but Microsoft relies on JavaScript for a whole lot else. First off, Microsoft needs to work closely with JavaScript to built its Edge web browser. There’s no denying that JavaScript is everywhere, but how are some of the world’s largest tech companies using JavaScript? For these 10 companies, JavaScript is immensely important, and that doesn’t look like it’s going to change any time soon.

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