Microsoft gives the 'OK' to use WinFX in development and rollout based on WinFX code to help the solution providers and ISVs. Code for the Windows Communication Foundation (WCF) and Windows Workflow Foundation (WWF) have been made available under Microsoft's Go Live Licenses, which allow developers to build and deploy applications before the Windows product concerned moves from beta.

Microsoftoffered early access to WinFX in the first Vista Community Technology Preview, which was issued in September at the company's Professional Developers Conference. WinFX combines Microsoft's existing .Net programming model with new tools for more easily linking software over the Internet, displaying data and creating business systems, the company said.

Developers should show a little concern if they choose to work with the new code since the Beta code released under Go Live is not supported by the company. Fixes, especially in security are not supported by the company, but Microsoft says the Go Live licenses help "drive the feedback loop between customers and Microsoft. This helps us ensure that the product we ultimately ship meets the stability, reliability and needs of our customers."

Jason Bloomberg, an analyst at ZapThink, commented saying that "WCF and WF, as well as WPF, will be quite significant to Microsoft's corporate customers, but indirectly… These technologies enable ISVs as well as Microsoft to build the next generation of applications, fully service-oriented apps that can potentially take advantage of all the capabilities these foundation technologies offer. But the foundations are just the ingredients. It's still up to the vendors to bake their cakes with them."

The first Go Live Licenses were introduced in June 2001 for Visual Studio.NET. This was eight months before shipment of the first .NET implementation of Microsoft's IDE (Integrated Development Environment).