A Quadtree is a tree data structure used to partition a two-dimensional space by recursively subdividing it into four quadrants or regions. This method is particularly useful for organizing spatial data, such as images or geographical information, allowing for efficient querying and storage. Each node in a quadtree represents a bounding box that contains points or other nodes. Quadtrees are commonly used in computer graphics, geographic information systems (GIS), and spatial indexing. They help improve performance in tasks like collision detection in video games and rendering 2D images. By breaking down space into manageable sections, quadtrees facilitate faster searches and data retrieval.