Now it is time to talk about our application we will build together. Apart from our web application written, of course, in Aurelia, we also need a backend service to persist our data. For the backend service, we will be using Node.js with the Express framework to build a robust API and MongoDB as our non-relational data storage. The following diagram explains our World Cup project architecture:

This a very simple architecture; the Aurelia app talks to the Node API directly, and the Node API talks to the database, which is a MongoDB database, using a very popular open source library called Mongoose. This is getting better; keep reading!