Marcus Oh, System Center MVP, is IT Manager of Directory and Systems Management for a large telecommunications provider, running directory services and management infrastructure for ~30,000 systems. He has been a MVP since 2004 in System Center, specializing in Configuration Manager and Operations Manager. Marcus has written numerous articles for technology websites as well as his own blog. He coauthored Professional SMS 2003, MOM 2005, and WSUS (Wrox, 2006), and was a contributing author to System Center Opalis Integration Server 6.3 Unleashed (Sams, 2011). Marcus is also a coauthor to the upcoming System Center 2012 Orchestrator Unleashed (Sams).