A Digital Versatile Disc, commonly known as a DVD, is an optical disc storage format that can hold large amounts of data, including video, audio, and other digital files. Introduced in the mid-1990s, DVDs became popular for distributing movies and software due to their higher storage capacity compared to CDs (Compact Discs). A standard single-layer DVD can store about 4.7 gigabytes of data. DVDs come in various formats, including DVD-Video for movies and DVD-ROM for data storage. They are read using a DVD player or a compatible computer drive. Although newer technologies like Blu-ray discs have emerged, DVDs remain widely used for home entertainment and data backup.