The Model-View-ViewModel pattern was introduced for Windows Presentation Foundation applications (WPF) and later exploded in popularity with the introduction of various frameworks to support development on additional platforms including Silverlight and Windows Phone. The release of KnockoutJS the pattern has extended MVVM to the web and exposed it to the JavaScript stack, while the new Windows 8 Metro platform embraces the same XAML and C#-based technologies that WPF and Silverlight pioneered. In this talk, Jeremy Likness takes a deep dive into the history of the pattern, describes its benefits, and discusses how it relates to modern application development. Is it a bad fit for web applications? Does it belong in the Metro space? Learn the benefits and trade-offs to help decide if this pattern makes sense in your projects moving forward.