If you administer a number of iPhones and/or iPads for an organization and right now you have no central control over them you’re probably in trouble. I would bet that you have found that it is time consuming to troubleshoot random user complaints, manage updates, and deal with apps. Its typically easier to manage a fleet a desktop and laptop computers because there are numerous tools (Remote Access, SSH, Casper) to help you manage.
MacTech has posted their Mobile Device Management (MDM) Primer and I recommend you read it if you need to get started managing the iPhones and iPads in your organization instead of letting them manage you.