The Web Service Software Factory 2010 is an integrated collection of resources designed to help you quickly and consistently build Web services that adhere to well-known architecture and design patterns.
Visual Studio 2010 Ultimate, Premium, or Professional editions (32 or 64 bit)
Visual Studio 2010 SDK
Guidance Automation Extensions (GAX) 2010 - also available in the Visual Studio Gallery
Installation and uninstallation
To install, run the file you download from here and accept the prompts. To uninstall, use the Extension Manager from the Tools menu in Visual Studio 2010.
NOTE: Even though you see "Ultimate" during the installation, and you're not using the Ultimate edition, continue with the installation. It should install successfully in Professional, Premium and Ultimate editions of Visual Studio 2010.