There are issues of maturity that come into play. It's not easy to define a service that can be used across a broad spectrum of business units. If you knew exactly what it had to do, that situation might obtain that; if you really don't know what the capabilities need to be, if you're learning as you build it, you might need a different kind of governance. Good governance is setting up decision mechanisms and providing the context in which you want a bottom-up creative effort to work.