If we look back at the work we have done in this chapter on the sample application, we will notice that the architecture used is of sound quality. Our application is made up of a number of independent components. Each of these components conform to the Single Responsibility design principle and are dedicated to only one area of responsibility. We have created display components that are responsible for displaying a single area of the application screen real estate. We have also used the Domain Events design pattern to react to events within our application. One component may raise an event, but another component may be interested in this event. We are also using the State and Mediator design pattern to control the animation and display of the various elements of our screen real estate.

We have also discussed the use of various Observable techniques to help with the asynchronous...