Ember Data is a library for loading data from a persistence layer (such as a JSON API), mapping this data to a set of models within your client application, updating those models, then saving the changes back to a persistence layer.
Ember.js is a JavaScript framework that does all of the heavy lifting that you'd normally have to do by hand. There are tasks that are common to every web app; Ember.js does those things for you, so you can focus on building killer features and UI.
Entity Framework integration for JSONAPI.NET, including an EntityFrameworkMaterializer and ApiController to highly automate building JSON API web services from EF6+ data models.