WSIT is a key component of the internal project code-named "Tango" and part of the ongoing web services interoperability efforts between Sun and Microsoft. WSIT has been tested extensively with Microsoft Windows Communication Foundation (WCF) and provides a reliable way for Java technology-based applications to integrate and interoperate with the .Net framework - above and beyond the WS-I Basic Profiles. As part of Sun’s ongoing commitment to improving interoperability with Microsoft products, Sun also announced plans to support WSIT in the next version of the Sun Java System Application Server. Developers using Java EE SDK 5.0 or Sun Developer Tools and technologies to leverage WSIT can get support through Sun’s new Developer Expert Assistance service program at http://developers.sun.com/services.