Dynamic Adaptive Streaming over HTTP (DASH) is a technology that allows video content to be delivered over the internet in a way that adapts to the viewer's network conditions. It breaks video files into small segments and encodes them at different quality levels. This enables the streaming player to select the best quality segment based on the user's current bandwidth, ensuring smooth playback without interruptions. By using standard web protocols, DASH can work across various devices and platforms, making it a flexible solution for delivering high-quality video. It is widely used in online streaming services, enhancing the viewing experience by automatically adjusting to changing network speeds.