Apple’s AirPlay technology allows you to stream video and audio and use a TV as an external Mac display, mirroring or extending the desktop.Connecting to a TV is ideal for demonstrations to a group or using one Mac's display from another without cable hassle.Three ways to use AirPlay for an additional display: mirroring the screen, apps/windows, or extending the desktop.Ensure devices are on the same network, meet system requirements, and have Wi-Fi enabled for successful AirPlay usage.To mirror the screen on an Apple TV or Mac, configure settings to allow AirPlay in either device's menus.Control the resolution of the mirrored screen in System Settings > Displays to optimize display performance.Option to mirror selected apps or windows rather than the entire desktop for focused sharing.Extend your Mac's desktop to another Mac or TV for increased productivity by customizing display settings.Easily start and stop mirroring modes using Control Center or the purple Screen Mirroring menu.Using AirPlay for screen mirroring or extension is beneficial for group sharing, presentations, and enhanced productivity.