Exchange and Lync Server 2013 Architecture

Below docs outlines the new Exchange and Lync Server 2013 Architecture.
  

Exchange server 2013 Architecture









http://www.2shared.com/document/xWmI7dg-/E2013-Architecture-Usergroup.html

Lync Server 2013 Architecture










http://www.2shared.com/document/f1leTJU6/Lync_2013_EXL314_Ehrensing_Mac.html