Joel Stidley has been working in the IT field for 15 years, and he has been a computer fanatic for much longer. Joel has been working with Microsoft Exchange since the initial Exchange Server 5.0 beta release. He has also led an engineering team to create a shared Exchange 2000 hosting platform before Microsoft released guidance on how to do so. Since the release of Exchange 2000 Server Service Pack 3, he has participated in the Microsoft Exchange JDP and TAP programs. Currently, he is the Principal Systems Architect at Terremark Worldwide, where he works with a variety of existing and future technologies related to virtualization, directory services, storage, and messaging. In his 10 years with Terremark, he has filled a number of key roles, including technical lead for creating and operationalizing the company�s Infinistructure virtualization platform. He also is a Microsoft MVP, blogger, and author or coauthor of several other technical books, including Professional Windows PowerShell for Exchange Server 2007 Service Pack 1 (Wrox, 2008), MCTS: Microsoft Exchange Server 2007 Configuration Study Guide: Exam 70-236 (Sybex, 2009), MCTS: Windows Server 2008 Applications Infrastructure Configuration Study Guide: Exam 70-643 (Sybex, 2008), and the Microsoft course MOC 10135: Configuring, Managing, and Troubleshooting Microsoft Exchange Server 2010. Joel started an Exchange community and blog Web site called ExchangeExchange.com in 2004 to provide a place for others interested in Exchange to share information.