Not that you ever were.
A recent article in ComputerWorld Canada magazine highlighted the increasing trend of IT departments being bypassed in the implementation of Cloud Computing.
That's right. You are being bypassed.
As long as IT departments are seen as the gatekeepers or cost overhead, they will become increasingly bypassed as less essential.
The IT department must transform itself to the role of integral service provider - shifting from the concept of "controlling machines" to "enabling people to work faster/better/innovatively using tools".
Get rid of the control mindset or you will become increasingly irrelevant.