vba
Visual Basic for Applications (VBA) is an event-driven, object-oriented programming language for writing macros, used for the entire Office suite as well as other applications. VBA is not equivalent to VB.NET, or VBS; if you're working in Visual Studio use [vb.net]. If your question is specifically about programming any MS Office application, also use the appropriate tag: [excel], [ms-access], [ms-word], [outlook], or [microsoft-project].