EmberJS Maintainability

I'm making an essay about AngularJS vs EmberJS. In here I compare these two with different questions and at the end a decision is made for which one is better for developing web applications based on the answers of these questions.

One question that I have struggled with for EmberJS is about maintainability. I haven't been able to find one article that gives information about this, unlike AngularJS.

I would like to know how does EmberJS helps you maintain your EmberJS web application. What concepts or whatever, does it provide to help you achieve a high level of maintainability for your web applications build with EmberJS.

Thank you for any help regarding answering this question.