This is an Enterprise solution. Microsoft bought out a startup late last year (Aorato) which focused on Active Directory Security. Essentially it is supposed to protect from attacks from within (like a cleaning man downloading the US Army's plan to firebomb Toronto) as well as without (like foiling stuff like pass-the-hash hacks).
It's really curious that Microsoft chose Aorato to buy; they (Aorato) published a paper in the middle of last year stating that Microsoft's Active Directory had a serious flaw; turns out that the report was totally false as the potential vulnerability was known for years and really had nothing to do with the implementation of AD. It also required a number of things to be in place that weren't really feasible.
But to answer your question, ATA isn't for the home user.