Get the IT department-level support you need when deploying iOS, Mac OS X, or Mac OS X Server in your organization. AppleCare OS Support delivers phone and email support for advanced integration, migration, and server operation issues. AppleCare OS Support - Alliance covers an unlimited number of enterprise-level support incidents across multiple locations for six technical contacts in your organization and provides one-hour response for priority 1 (server down) issues, 24 x 7. This plan also includes an onsite review by an Apple technical support engineer and assigns a technical account manager to your organization for one year