A backboard is a flat, rectangular surface used in sports like basketball and volleyball. In basketball, it is positioned behind the hoop to help players make shots. The backboard is typically made of glass or acrylic, allowing for clear visibility and durability. In addition to its role in basketball, backboards can also be found in pickleball and tennis courts, where they serve as boundaries for the playing area. They are essential for defining the space and ensuring fair play in these sports.