Security. Like VPNs, app store policies, user-creation, All of this needs a decent understanding of the OS and a config management system to implement it. The

Security. Like VPNs, app store policies, user-creation, All of this needs a decent understanding of the OS and a config management system to implement it. The problem with OSX is that most release change things, often in undocumented ways. Like breaking how AD integrates (thanks 10.6)