Ember.js service vs ember-redux

We are evaluating tech stack for a customer portal project. While I have a (biased) secret love connection towards ember, I am almost convinced to use it for the project.

However, coming from a react.js background, I would like to ask about store (redux) and Ember services.

1. Are Ember services considered source of truth? Can they be used instead of ember-redux?
2. I have seen ember-redux addon. Seems good. However, whats the point if we have Ember.js services?
3. Any use-case when ember-redux can be preferred over Ember services?