Xamarin has matured over the years, and with their recent embracing of XAML, they are building on the great things that XAML has going for it. It is truly becoming a write once, run many type of platform. With Visual Studio 2015, Xamarin even comes as part of the out-of-the-box experience, proving the maturity of the platform and also the Microsoft's commitment to work with Xamarin in order to give us, as developers, the best tools for the job.
In the next chapter, we will see how you can debug things and figure out when there are problems in a good way.