Storage discs are physical media used to store digital data. Common types include CDs, DVDs, and Blu-ray discs, each varying in capacity and technology. They are often used for music, movies, software, and data backup, allowing users to access and transfer information easily. These discs work by encoding data in a series of pits and lands on their surface, which a laser reads. While digital storage has shifted towards solid-state drives and cloud storage, storage discs remain popular for their portability and compatibility with various devices, including DVD players and game consoles.