One sentence explanation to MVVM in WPF?

Question

I heard its the next best thing in building WPF UIs, but all existing examples have dozens of lines of code - can I get a Hello World for MVVM that explains in no uncertain

Answer 1

One sentence? Here goes.

MVVM is a UI segregation pattern where the Xaml (View) binds to a facade (View Model) allowing the guts of your program (Model) to avoid having UI concerns leak down a layer.