XAML (short for Extensible Application Markup Language and pronounced zammel) is a markup language used to instantiate .NET objects. Although XAML is a technology that can be applied to many problem domains, its primary role in life is to construct WPF user interfaces. In other words, XAML documents define the arrangement of panels, buttons, and controls that make up the windows in a WPF application.
It’s unlikely that you’ll write XAML by hand. Instead, you’ll use a tool that generates the XAML you need. If you’re a graphic designer, that tool is likely to be a graphical design program such as Microsoft Expression Blend. If you’re ...