Thomas Martinsen is an experienced and reputable .NET developer with focus on Silverlight, WPF, and Windows Phone development. In recent years, Thomas has worked with several companies and helped them to implement Silverlight in their solutions.

Besides acting as advisor and partner on several Silverlight and WPF projects, Thomas teaches Silverlight, WPF, and Expression Blend.

Chanh Ong is a Computer Specialist and has many years of experience in various computer platforms and operating system, programming languages such as PHP, Javascript (AJAX), C, VB, Perl, Microsoft Access, dBase, FoxPro, and so on, system administration on Unix, Linux, Vax and Microsoft Windows, DBA of various databases like Oracle, Mysql, Postgres, Informix, MSSQL, and so on. He utilizes web server Apache and IIS to help build web application. He also does custom template for client.

He has an open source project called COAddOns that develops several add-ons for Mambo, Joomla, MiaCMS, and MoseCMS, which is an easy and extensible CMS. He is also a former Mambo CMS core developer.

He researches CMS and tools! He has a lot of experience installing various CMS including Wiki and he also set up sites using Microsoft SharePoint services.

He has a website that helps him on his effort of researching various CMS tools and blog about his findings. His website also provides support for his open source project called COAddOns.

His main web site is: http://support.ongetc.com and his open source project document site is: http://docs.ongetc.com and his blog is: http://blog.ongetc.com.

He wrote an article for Packt Pub called How to Choose an Open Source Content Management System and you can find it online here at http://www.packtpub.com/article/how_to_choose_an_open_source_content_management_system .

He has also reviewed for Packt Open Source CMS Beginner's Guide and has participated as a judge for Packt annual Open Source CMS Award.

Yingwei Yang joined Microsoft in 2008. Before that, he worked for ITG and Redcats USA. Yingwei enjoy working with .NET technology and is a big fan of Service Oriented Architecture, Silverlight, and Cloud. He always thinks that Web Services/Software as a Service that brings endless opportunities and possibilities.

Yingwei Yang also helped review the book SOA with WCF, LINQ, and Visual Studio 2008 (6620) and WCF-Muti-tier Services Development with LINQ (1148).