CD/DVD burning is the process of writing data onto a compact disc or digital versatile disc. This is done using a laser in a CD/DVD burner, which heats up the disc's surface to create pits that represent the data. The discs can store various types of information, including music, videos, and files. To burn a CD or DVD, users typically use software that organizes the data and sends it to the burner. Once the burning process is complete, the disc can be used in compatible devices, allowing for easy sharing and playback of the stored content.