How to install DMD 64bit on Windows?

[ric maicle via Digitalmars-d-learn]

On Thursday, 22 October, 2015 02:50 AM, Adam D. Ruppe wrote:
> Use the .exe installer and it will offer to download and install visual
> studio for you as part for its process.

Sorry to ask this but could anyone please explain why Visual Studio is
required by DMD 64-bit? (I have been away far too long than I should
have)

Thanks