What is the difference between Blu-ray and DVD?

The simple answer is that Blu-ray is a high-definition format and DVD is a standard-definition format. Much like the evolution from VHS to DVD, the Blu-ray format has received broad support from major entertainment providers, consumer electronics, and personal computer companies as a successor to the current DVD format. Ultimately, Blu-ray represents a revolutionary improvement over DVD in terms of picture and sound quality, and advanced interactivity, delivering a whole new way to experience movies, games and music.