Disc burning is the process of writing data onto a CD, DVD, or Blu-ray disc using a laser. This technology allows users to create physical copies of digital files, such as music, videos, or documents. The data is encoded onto the disc's surface, making it readable by compatible devices. To burn a disc, users typically need a computer with a disc drive and burning software. The software organizes the files and sends them to the drive, which then uses a laser to etch the data onto the disc. Once completed, the disc can be used for storage or playback on various devices.