An Android TV Stick is a small, HDMI-pluggable device that turns any TV into a smart streaming hub, running the Android (or Google TV) operating system to provide access to apps like Netflix, YouTube, Disney+, Google Assistant, and the Play Store, offering a portable, affordable way to get 4K streaming and voice control. They compete with devices like Roku and Fire Stick, featuring compact designs, Wi-Fi connectivity, Bluetooth, and voice-controlled remotes for easy navigation and content access.