Show & Tell with Ember Services by Jen Weber A service in Ember can be the creative heart of an app, the way to connect to powerful third-party APIs, the cornerstone for managing data flow, and much more. If we try to describe in words what a service does, where could we even begin? Let's instead explore some examples and connect the dots. You will get introduced to three different kinds of services: interactive, asynchronous, and data-driven. Learn what all services have in common, the pros and cons of using singletons, and some tips for maintainability.