Learn how to keep your customers, management, and quality assurance team happy by building testable Silverlight applications. Explore how the Model-View-ViewModel (MVVM) and Inversion of Control principles can be used with .Net RIA Services to create Silverlight applications with high testability across multiple tiers. Hear guidance from the Silverlight team on how to best use the available testing tools and technologies to take full advantage of your improved application designs to boost quality.