Stephen Walli is Vice President of Open Source Development Strategy, Optaros, where he's responsible for developing and managing Optaros' relationships with the open source community. Previously Stephen was an advocate for open source at Microsoft, where he was focused on the technical implementation of open source-related community projects, creating a business model at Microsoft to engage in the open source community. Stephen was the Vice-president, R&D and a founder at Softway Systems, Inc, the developer of the Interix environment to re-host UNIX applications on NT. Stephen was also an independent consultant for X/Open, Sun, UNISYS, and the Canadian government. He was once a development manager at Mortice Kern Systems, and a systems analyst at EDS. A long time participant and officer at the IEEE and ISO POSIX standards groups, representing both USENIX and EUUG, he blogs on open source, standards, and the business of software at http://stephesblog.blogs.com/