This is a neat set of modern Visio stencils for Office 365. There is a whole heap of icons (100+) that include Azure, Exchange, Lync, SharePoint, Cloud, Mobile devices and server infrastructure.
The new MSDN articles and help documents use these stencils so it’s nice of Microsoft to have shared it with us. Download them here and copy the .vss files to your \Documents\My Shapes folder.
Here’s a small sample of the available icons.