The Firestick is a streaming media player developed and sold by Amazon, allowing digital audio and video content to be streamed to the TV through an HDMI connection. It runs on Amazon’s custom operating system called Fire OS, which is based on Android. The device supports various streaming services and apps, offering users access to movies, TV shows, games, and more. It features voice control and screen mirroring capabilities, and its portability and user-friendly interface make it popular among consumers.