There are three ownership models:
* Personal
* Institution
* Layered. combines personal & institution.
Watch this apple video on layered ownership. It education based, but that's OK.
http://www.apple.com/education/resources/videos/#ios-layered-ownership
"Apple Configurator makes it easy for anyone to mass configure and deploy iPhone, iPad, and iPod touch in a school, business, or institution." Limited to Macs
http://itunes.apple.com/us/app/apple-configurator/id434433123?mt=12
http://www.jamfsoftware.com/
MDM -- moble device management
MDMs
Airwatch, Meraki, MobileIron, Profile Manager on OS X Server, or Zenprise
For a comparison see this page:
http://www.enterpriseios.com/wiki/Comparison_MDM_Providers
Airwatch
http://www.air-watch.com/
Meraki -- A free MDM [ expect lots of email and phone calls about upgrades ]
http://www.meraki.com/products/systems-manager/
https://discussions.apple.com/thread/4067210?tstart=0
Good howto by Sergio Sosa.
https://discussions.apple.com/thread/2594001?start=15&tstart=0
MobileIron
http://www.mobileiron.com/
Profile Manager by Apple
Zenprise
http://www.zenprise.com/