With App Services, there is another layer of abstraction which hides the underlying cloud services. With App Service, we don't need to choose the Worker Role or Web Role that our application will be running on. Instead, we can simply choose any app model from Web App, API App, Logic App, and Mobile App, and deploy the application with easy and simple steps. In the next section, we will discuss App Services in detail, and see how firm it is to develop applications for different app models.