The official Amazon.com shopping website is located at Amazon.com. Any registered user can purchase items and have them shipped to his house. Users who have subscribed to Amazon Prime service can get free shipping on most items.
Amazon started in 1994 as an online book retailer, but quickly spread into other retail sectors. As of 2015, it is the largest Web-based retailer in the world. Amazon also offers instant video streaming, music streaming, and cloud computing services. In addition, Amazon has a popular line of e-readers and tablets called the Kindle and Kindle Fire, respectively. The prevalence of these devices has helped spur the growth of e-books, which have outsold hardcover books on Amazon since 2010.