Microsoft .net is an umbrella for a group of platforms for building and running Windows (WPF) and Web (SAP>NET) applications

Windows Presentation Foundation (WPF) in Visual Studio 2015 provides developers with a unified programming model for building modern line-of-business desktop applications on Windows.

Visual Studio uses the .net framework and includes Visual Basic (VB), C# and F#.

Links:
Overview of Visual Studio 2015 Products

last updated 15 Apr 2016