Ember in itself is an already a full ecosystem. Ember Data (included directly in the framework) is an impresive piece of software.
Nevertheless, starting a new application generally begins by adding some classical Ember addons.
For this addon, we choose to embed directly some of them to simplify the whole setup:
*[ember-cli-mirage](https://www.ember-cli-mirage.com/): this testing framework allows you to set up functional prototype of your app that runs entirely in the client - before writing a single line of your API. That is exactly what we need here!
*[ember-concurrency](http://ember-concurrency.com): Ember (and especially Ember Data) works with promises. Dealing with them is greatly simplified by using this addon.
