In 2010, digital video discs (DVDs) and Blu-ray discs are the norms in home entertainment. Despite how they look, however, Blu-rays and DVDs are different kinds of technology, just as DVD meant a 5 to 10 times increase in storage capacity compared to CD, Blu-ray Disc will increase DVD capacity by 5 to 10 times. Several key differences have made the Blu-ray disc the official successor to the DVD.