How can I physically cast content to an Apple TV?

To physically cast content from a compatible device to an Apple TV, one must use Apple's AirPlay technology, which enables wireless streaming of audio, video, photos, and screen sharing. Begin by ensuring that both the Apple TV and the casting device are connected to the same Wi-Fi network. On an iPhone, iPad, or a Mac, one can swipe down or up to access the Control Center (depending on the iOS version), then tap the "Screen Mirroring" icon and select the Apple TV from the list of available devices. If using a Mac, one might also find the AirPlay icon in the menu bar when available; clicking on it will reveal a list that includes the Apple TV. After selecting the desired device, the content should begin to appear on the Apple TV-connected display. If required, one may need to enter an AirPlay passcode that appears on their television into their device. It's worth noting that some apps also have individual AirPlay buttons within their interface, allowing for direct content sharing to the Apple TV.