In the previous recipe, we saw how to build a minimal web server on the Galileo board, using the Node.js framework. However, it would be really hard to build more complex applications using this; the code would really get complicated.
To handle more complexity, we will use one of the most popular Node.js modules, Express, which also works on the Galileo board.
Express is a Node.js module that simplifies the process of creating and running web server applications on top of Node.js. You can find more information about Express on the official website at http://expressjs.com/.
You don't need to download or modify anything at this point, as Intel XDK will automatically install the Express module.