A CD-R, or compact disc-recordable, is a write once, read multiple (WORM) media used to store electronic data. Data is stored on the CD-R through a process called CD burning. The WORM principle means that data can be burned onto the disc only once, and can be accessed any number of times.

Business, government and other organizations produce and store vast amounts of data. This critical data is used to plan future operations and make important decisions. CD-Rs are used to store this data. Copies of these CD-Rs can be made and distributed to a large number of people.

A CD-R is the cheapest way of storing data in todays world. They are available for around 50 cents apiece in the wholesale market. CD-Rs can store around 700MB of electronic data, which is around 80 minutes of digital video files. Some important directions should be followed before initiating the 'CD-R burn' process. All the needed files and folders should be moved to a central folder. These should further be classified based on data types like mp3, jpg, avseq, doc, txt and others to avoid confusion and save time. These CD-Rs have a lifespan of 10 to 15 years depending on how they are stored. No manufacturer gives more than a decade-long warranty on its CD-Rs.

After the data burn process is completed, the CD-Rs should be stored in a suitable environment that is free from excess moisture, excess heat, magnetic fields and dust particles. These conditions are not suitable for CD-Rs, and can destroy or corrupt the electronic data stored in them. Every manufacturer issues instructions regarding proper upkeep of its CD-Rs, which should be strictly followed.

The use of these CD-Rs is increasing in both organizations as well as domestic households. Families are using this media to store home videos, digital images, movies, games and other important files and folders.