A DVD burner is a device that allows users to write data onto a DVD (Digital Versatile Disc). It can be found in computers or as a standalone unit. DVD burners are commonly used to create backups of files, store videos, or distribute software. They can handle various formats, including DVD-R, DVD+R, and rewritable DVDs like DVD-RW. To use a DVD burner, you typically insert a blank DVD, select the files you want to copy, and initiate the burning process through software. Once completed, the DVD can be played on compatible devices, such as DVD players or computers, making it a versatile tool for data storage and media sharing.