IT Quality

I think a lot of organizations struggle to measure the quality of the IT organization. IT systems are installed at most businesses to improve the quality of transactional business processes, but I have rarely seen effective systems to improve the quality of IT processes that support those business processes.
A lot of times IT organizations react to poor quality by adding bureacratic governanance processes that require multiple levels of reviews and approvals only hoping to improve quality but without any measurable way of gauging if it actually does. I would be curious to see if there are any organziations that handle this effectively.
The one measure that I think may be an effective gauge of IT quality at least from an execution perspective would be to measure the number of defect free releases in a production environment. My suspicion is that very few IT organizations (and probably software companies) that get a move to production right on a consistent basis without a rework loop. Now you complement that with a measure of cycle time that can show the elapsed time from when a customer/client requests a change to the time it is operational and we may have the beginnings of a set of KPIs that could be used to measure the effectiveness of an IT organization