Mike Dailey tries to convince us gave me the impression that moving to Linux is an all-or-nothing proposal. That's plain ridiculous. An undertaking of that scale is a gigantic project, which no CIO will endorse. What you can do is introduce FOSS technology in the enterprise, step by step. Once it has proven itself you may take the next step. Since mixing Microsoft and FOSS is a viable scenario you have a multitude of options at your disposal.