Benefit #7: XPS is a natural extension of .NET and WPF
.NET and Windows Presentation Foundation are powerful and exciting technologies that are used more and more as tools to develop enterprise applications.
If your applications are based on .NET or WPF, then generating XPS documents from them is a snap. It is provided by default, at no extra cost.(This article is part of the 'Top 9 Benefits of using XPS for your business'-series)