MS Entourage, or Mac OS X Mail and iCal, etc.
Those are clients, not servers
What's Apples equivalent to MS SQL Server and what enterprise IT Director would seriously consider installing it?
Oracle 10g.
Apple makes Oracle Server?
What's Apples equivalent to MS AD Domain Controllers and what enterprise IT Director would seriously consider deploying it?
LDAP?
LDAP is "made" by Apple? Or is it just a protocol? Maybe you should read up on that.
What's Apples equivalent to MS Office and what enterprise IT Director would seriously consider deploying it?
Office for Windows? Apple iWork?
iWork? lol
A lot of IT Directors are experiencing a big climbdown in the corporate world lately. They look like fools for wasting valuable resources with all of Microsoft's security problems.
Not really. Maybe you should stick to what you know.
Sorry, that's the best I could do in 60 seconds. Lunch was being served.
Mac OS X Server includes server software like Sendmail, MySQL, etc. Apple does sell a database system called FileMaker. But for the enterprise, Oracle 10g and Sybase are the best solutions, and Apple has wisely decided to support those systems rather than reinvent the wheel. Several other Mac OS X Server solutions are listed here.
Unfortunately, a lot of IT directors are becoming dinosaurs in the enterprise. Their prestige is declining in the corporation because of the bad decisions they've made. They foolishly believe that clinging to Microsoft will save them - but it won't.