Windows Presentation Foundation (or WPF) is a computer-software graphical subsystem for rendering user interfaces in Windows-based applications. wikipedia.org

Application software is a set of one or more programs designed to carry out operations for a specific application. Application software cannot run on itself but it is dependent on system software to execute. wikipedia.org

The .NET Framework (pronounced dot net) is a software framework developed by Microsoft that runs primarily on Microsoft Windows. wikipedia.org

Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft. It is used to develop console and graphical user interface applications along with Windows Forms applications, web sites, web applications, and web services in both native code together with managed code for wikipedia.org

C# (pronounced see sharp) is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines. wikipedia.org

Microsoft Windows is a series of graphical interface operating systems developed, marketed, and sold by Microsoft. wikipedia.org

User experience design (UXD or UED) is the process of enhancing customer satisfaction and loyalty by improving the usability, ease of use, and pleasure provided in the interaction between the customer and the product. wikipedia.org

Extensible Application Markup Language (XAML) is a declarative XML-based language created by Microsoft used for initializing structured values and objects. It is available under Microsoft's Open Specification Promise. wikipedia.org

The Model View ViewModel (MVVM) is an architectural pattern used in software engineering that originated from Microsoft. wikipedia.org

User interface design or user interface engineering is the design of computers, appliances, machines, mobile communication devices, software applications, and websites with the focus on the user's experience and interaction. wikipedia.org