A Visual Studio extension for Dlang. Provides syntax highlighting and editing features using the Language Server protocol.
DLS is used as a Language Server, which in turn uses libraries such as DCD, DFMT, D-Scanner as well as other libraries to provide language editing features.
Look here for an up-to-date list of features currently supported. Far from every possible feature is implemented, but the server will update itself as new features come.
Viusual Studio 2017 version 15.8 is the minimum required version. Dub and a D compiler (DMD, LDC or GDC) should be installed for the extension to work properly.