Now found in System Preferences > Sharing , allowing any Mac to cache iCloud data and software updates for a local network.

These were fully integrated into the standard Sharing pane, removing the need for the Server app for basic network storage. The Survivors: Device Management

By version 5.6, the Server app's primary purpose became . This tool received significant updates to support new payloads and restrictions for iOS 11.3 and macOS High Sierra, such as: Configuring software update notification delays. Enabling or disabling Bluetooth remotely. Requiring Face ID for AutoFill on mobile devices. Legacy and Alternatives macOS Server 5.6.3-5.7.x Frequently Asked Questions FAQ

Mail, Messages, Calendar, Contacts, and Wiki.

To streamline the OS, Apple moved several high-value features directly into the standard macOS client (High Sierra 10.13.4 and later):