Ember Data is a powerful data layer, but it has its limitations and pain points, especially as applications grow in scale. Ember M3 builds on Ember Data's core, but replaces the default model class with an alternative that is more flexible and lightweight. In this talk, we'll explore M3's capabilities, and then test them out by building an app with M3 and Firestore, a realtime NoSQL database-as-a-service. As we'll see, M3 and Firestore make a perfect pair, enabling rapid prototyping and flexibility, while setting you up for success as your application grows.