The alliance will focus on promoting interoperability with Microsoft software in areas such as systems management, virtualization, identity management, data access, multiple portal connections through Web services-based single sign-ons and developer tools, according to Jason Matusow, senior director for interoperability at Microsoft.

"We want to create a forum that creates an environment for getting things done," Matusow said. Vendors that join the group can still decline to make their products work with another member's if they believe it is in their business interest. "Just because one member holds out his hand to shake doesn't mean the other one has to take it," he said.