So,
Apple's Server OS is different from standard MacOS X. What's even more interesting though is that it looks like there's some fairly decent Active Directory integration available via LDAP 3 authentication support in
Open Directory.
Why would you want to do that? - because we can start displacing ms with Apple, and not just for servers. If I can authenticate from my mac to the AD, that's one less barrier to being able to use a mac instead of a PC at work... and I know which I'd prefer.
I suspect it's not as seamless as we might be led to believe (I bet proxy authentication is still a bugbear, for example), but good news nonetheless.
Let me be clear - I'm not anti-microsoft per-se; I use their products at work, and in the corporate space they are excellent. I just believe that there should be a choice.
As I've said before; as an IT user, I don't believe it's in my best interests to be served by a monopoly: Competition will promote the development of products and channels to best meet my requirements, rather than to satisfy the financial forecasts of some mega-corporation.
At home, I do have a choice, and that's why I use Macintosh and Linux :) - rant over.