Mike Kline is an IT professional based in the Washington, D.C. area. After serving in the Army (97B) and attending George Mason University, Mike officially joined the IT industry in 1998, starting as a help desk technician and working his way up to his current role as a systems engineer working for SE Solutions Inc. Mike has supported numerous federal agencies.

He is a four-time Microsoft MVP awardee for Directory Services and holds several certifications, including MCSE, MCITP, MCSA Windows 2012, and CISSP. He's also active on several forums and has a personal blog at ADisfun.com.

Jacek Swiatowiak is a Polish MVP (in the years 2010-2012 for Forefront Family and since October 2012 for Directory Services). He has been a Microsoft Certified Trainer (MCT) since 2006 and also a MCSE 2003/Messaging/Security, 23 MCTS, 9 MCITP, MSA in Office Communications Server 2007 – U.C. Voice. He is a lecturer at Gdansk University of Technology (Faculty of Electronics, Telecommunications and Informatics) and Polish-Japanese Institute of Information Technology. He has 16 years of experience in designing and deploying Active Directory environments, focusing now on Microsoft's unified communication solutions. He has many publications on the Polish Microsoft TechNet website and other portals.

He is also an author of a book describing Microsoft Forefront Family. Currently he is working with other Exchange Polish MVP's on a book presenting Exchange 2013 and Lync 2013.