ember-redux | Predictable state management for ember apps | Addon library

From the guides:

A Service is an Ember object that lives for the duration of the application, and can be made available in different parts of your application.

An Ember service doesn't provide any functionality out of the box. It's just an empty, long-lived object. You can put whatever you want in there: a shopping cart, a datastore, an activity feed, etc.

Redux—and by extension, ember-redux—is a pattern (and boilerplate) for implementing predictable state in your app. You can add states and reducers to any Ember object, including a service.

Comparing an Ember service and ember-redux is a bit like comparing a garage to a blueprint for building cars. You shouldn't be trying to decide whether to use one or the other. Instead, you should consider whether use that particular blueprint to build your cars, and then whether to store those cars in the garage or somewhere else.