Will a Microsoft Office Add-In developed in Visual Studio work for both a Windows and Mac ( osx ) versions of Ms Office?

I want to develop a Microsoft Office Word Add-In for Mac Users. I would like to know if we create it using Visual Studios in windows will it be compatible with the Mac version of office or is there a whole another way to develop for Mac?

Please provide links so that I could follow some guidelines. The http://ift.tt/rnTyPu site doesn't exactly speak of the platform compatibility of the Add-In.

Thank You very Much in Advance.