As you continue to consolidate your server infrastructure and make it more cloudlike, a key hurdle you and most enterprises must overcome is the sharing of physical infrastructure between business units (BUs). While some organizations have a centralized IT budget that makes this easier, most have to wade through political waters to accomplish this objective. The enterprises that have successfully achieved a shared infrastructure did so through a combination of executive mandates and proof-before-production phased implementation. IT service catalogs can play a key marketing function as well. Here's how you can do it too.