Steef-Jan Wiggers has over 15 years of experience as a technical lead developer, application architect, and consultant, specializing in custom applications, enterprise application integration (BizTalk), web services, and Windows Azure. He is very active in the BizTalk community (http://social.technet.microsoft.com/wiki/contents/articles/7141.user-page-steef-jan-wiggers-microsoft-biztalk-server-consultant-and-mvp.aspx) as a blogger, Wiki author/editor, forums writer, and public speaker in the Netherlands and Europe. For these efforts, Microsoft has recognized him as a Microsoft MVP for the past four years. On his personal blog (http://soa-thoughts.blogspot.com/) and BizTalk Administrators blog (http://www.biztalkadminsblogging.com/), he shares his knowledge about SOA, Azure (Service Bus), BizTalk Services, and BizTalk.
In addition to consulting, he is also an author and has been a technical reviewer for Packt Publishing. He has written the book BizTalk Server 2010 Cookbook, Packt Publishing, and has technically reviewed the following books:
Microsoft BizTalk Server 2010 Patterns by Dan Rosanova
(MCTS): Microsoft BizTalk Server 2010 (70-595) Certification Guide by Johan Hedberg, Morten la Cour, and Kent Weare
Kevin Smith is a co-founder of Affinus, a UK-based Microsoft partner and previously worked in the BizTalk Server product group for six years delivering BizTalk Server 2000, 2002, and the seminal third release 2004, which created the much-praised BizTalk architecture that the current product is based on. Kevin works on hard .NET problems for customers and specializes in the investment banking industry. His primary interests lie in UX design and machine learning.
Tomas Restrepo has been writing software for over 10 years, starting with C/C++ and eventually moving to the .NET platform. He currently spends most of his time helping other developers solve complex problems and troubleshooting application performance and scalability issues.
Daniel Bullington is a technology architect, manager, and strategist with industrial experience in financial services, healthcare, management consulting, and Software as a Service (SaaS), working for several well-known Fortune 500 and Fortune 50 companies. His focus has been on large-scale web/mobile, SOA/EAI, DW/BI, and cloud solutions. Daniel drives continuous improvement and operational excellence (including an intelligent level of process, metrics/KPIs, and so on) to spur meaningful IT organizational change and an enhanced value proposition through positive business outcomes.