Now that you've created a simple app, similar to a traditional Windows Forms app, except with WPF, we're going to go into the next chapter and explain why this is not an ideal approach. We're going to redesign this app so that it's more reusable. What is the best way to write code that is reusable, maintainable, and configurable? How would we automate the testing of this app as it stands? How would you make it so that you could change the base layer without having to change the XAML and recompile the app? These are all important questions that need to be thought of before writing a professional level app. In the chapters to come, we will address these issues while explaining the main features of ArcGIS Runtime in much more detail.