Amazon was founded in 1994 as an online bookstore and has since expanded into selling a wide variety of products online. In addition to online retail, Amazon also offers cloud computing services through AWS, video and music streaming through Prime Video and Amazon Music, tablet computers through Fire Tablets, streaming devices through Fire TV, smart speakers through Echo and Alexa, and e-readers and digital books through Kindle. Many of Amazon's services such as Prime Video, Amazon Music, and Kindle books offer subscriptions to access large libraries of content.