Dvd, Cd, Blu-Ray Authoring & Replication For Viewing/Storing Picture/Sound

A DVD is an optical disc storage media for sound and picture, while a CD (compact disc) is used to store digital data or audio.
A Blu-ray disc are hi-density DVDs with greater storage capabilities depending on the number of layers on the disc. DVD's, CD's and Blu-ray's are authored (created) and replicated extensively in the entertainment industry for the distribution of music, films, games, computer programs, etc. The DVD, CD and Blu-ray replicators specialize in mixing, remastering and encoding product, and may also supplying graphics for the finished product.