Amazon.com sells physical media.
Amazon.com started as an online bookstore , later diversifying to sell DVDs , Blu-rays , CDs , video downloads/streaming , MP3 downloads/streaming , audiobook downloads/streaming , software , video games , electronics , apparel , furniture , food , toys , and jewelry.
Compact disc -LRB- CD -RRB- is a digital optical disc data storage format released in 1982 and co-developed by Philips and Sony.
In 2014 , revenues from digital music services matched those from physical format sales for the first time.
Pre-recorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD.
The main application of Blu-ray is as a medium for video material such as feature films and physical distribution of video games for the PlayStation 3 , PlayStation 4 , and Xbox One.
