Final answer:
Mac OS X/macOS Server has transitioned its services over time, with a current focus on device, storage, and user management. Key features now include Profile Manager for MDM, Xsan for storage, and Open Directory for user account administration.
Step-by-step explanation:
Services typically included in Apple's Mac OS X/macOS server have evolved over time, focusing on simplifying the management of Apple devices and user accounts in various environments. Historically, macOS Server included a wide range of services such as file sharing, calendar and contact management, a DHCP server, VPN server, email server, and web server. However, with the advance of macOS versions, Apple has streamlined the macOS Server to focus on management of devices, storage, and users. Key features now include Profile Manager, which is a mobile device management (MDM) service that configures Macs, iPads, and iPhones; Xsan, which is a powerful and scalable solution for storage consolidation; and the Open Directory, which provides a centralized directory for the administration of user accounts.