Exchange 2013 CU1 was released today! Find out more here, or download it here. This means that coexistence/migration with/from Exchange 2007/2010 is now officially possible and supported!
Josh M. Bryant is currently a Director of Technical Product Management at Tanium where he builds products that help customers overcome the challenges of managing very large scale computing environments. Prior to joining Tanium, he was a Premier Field Engineer at Microsoft specializing in Microsoft Exchange Server, and then later a Cybersecurity Architect specializing in Compromise Recovery.