Tom Arnold was a program manager for Microsoft Visual Studio 2005 Team System, specifically for the testing tools. He has also managed other commercial testing tools projects by Microsoft and Rational Software and has spoken at such industry conferences as STAR, Microsoft Tech Ed, Internet World, and many others. In addition to two other books on software testing, he has produced three video series on the topic and co-founded a 250-employee software testing company (later sold to Lionbridge/Veritest). Tom is currently a program manager at Microsoft on the OfficeLive.com team.

Dominic Hopton is a software development engineer on the Visual Studio Enterprise Test team at Microsoft. One of the original team members, Dominic helped fashion the new development and testing tools in Visual Studio 2005. He is currently working on the next version of testing tools for Visual Studio.

Andy Leonard is a SQL Server database developer, MVP, and engineer. He is a co-author of Professional SQL Server 2005 Integration Services. He founded and manages VSTeamSystemCentral.com. Andy’s experience includes web application architecture and development, VB.NET, ASP, and ASP.NET; SQL Server Integration Services (SSIS); data warehouse development using SQL Server 2000 and 2005; and test-driven database development.

Mike Frost is a senior "software design engineer in test" (i.e., a software tester who mostly writes code) at Microsoft. Over the last 10 years he has worked on several releases of Visual Studio with a focus on the infrastructure and architecture used for testing software. Currently he is working on the new OfficeLive.com service product.