Despite these major improvements in how the new Windows Server can let you implement policies, DAC requires extensive changes, as noted in Redmond Editor Jeffrey Schwartz's January 2013 cover story, "Group Control". As a result, it will take time before many enterprises implement DAC widely due to the complexity and planning it requires.
However, DAC will become an important part of any Windows enterprise in the future for a number of reasons. The most obvious benefit to Active Directory admins is that it implements security without using security groups. As a result, I've spent a great amount of time exploring DAC, and I'll explain what you need to know to start implementing it.
Many organizations have a complex web of groups and nested groups, many of which they've forgotten about or ignored. I recall one company I worked with that said its proliferation of security groups became so difficult to manage that it didn't know who had domain admin rights -- and it was afraid to fix the situation because the whole infrastructure might come unraveled.