This document may be a bit heavy on the technical side but, lets face it, if you are worried about the security of your enterprise mobility on iOS, then more information is better. To help Apple has documented some of that process into a neat and understandable document for securing those end devices and handling your Mobile Device Management (MDM) process.
They cover key elements IT Departments and Information Security Professionals should understand when deploying iOS devices on their network. System Architecture, Encryption and Data Protection, Network Security and Device Access are all covered. With recent Gartner studies showing that 60% of surveyed organizations standardizing on the iOS platform in the next 12 months, this might be a nice piece of information to have.