Family Sharing

Family Sharing is a feature of Apple's operating systems that allows iOS, iPadOS, and macOS users to share their subscriptions to services from Apple. Family Sharing also supports watchOS, but only as a client.

History
Family Sharing was introduced in 2014 as part of iOS 8 and OS X 10.10 (Yosemite).

Usage
Family Sharing can by set up in System Preferences on a Mac, or Settings on an iPhone or iPad. Through Family Sharing, the primary subscribing user (an "organizer") can share their subscriptions to Apple Arcade, Apple Fitness+, Apple Music, Apple News+, Apple TV+, and iCloud+ with up to five family members or friends, for a total of six shared users.