Mac vs. Windows in the Enterprise
Rescuecom did an evaluation of Mac vs PC support and found that Macs are the #1 in reliability both on hardware and software issues.
American Customer Satisfaction Index (ACSI) charts customer satisfaction across all industries. Apple products have been in the top 5 for customer satisfaction since ACSI started charting back in 1996. For the last 13 years Apple has been in the top 5. In the last 10 years Apple has been in the top 3. Over the last 6 years Apple has ranked #1 in customer satisfaction.
All three of these translate into Savings and Productivity.
Fact: Many management entities mistake an application to be a process. An example of which is Outlook being "a must" for email, calendaring and contact management. All three of these can be done without any Microsoft products at all.
Fact: Macs, properly configured, are excellent AD participants.
Fact: Macs managed by an OD Master in a golden triangle configuration can have policy applied with the ability to secure a Mac far greater than Windows. For example a group can be set to only allow users to run applications specifically in the /Applications folder. Even more secure, the policy can be further set to specific apps (not folders) eliminating apps ran off USB drives, which PCs still suffer from.
Fact: There are no "In the Wild" viruses due to OS X's Unix underbelly. We've been chasing conficker across our Windows boxes for several weeks now and we're a secure network.... Maybe!