zon.com. In addition to charging Marketplace retailers a hosting fee, Amazon earns a commission on all goods these retailers sell on its site. They additionally charge fees for warehousing and delivering packages for these private retailers if they request warehouse and delivery service. In 2006, Bezos began offering cloud and security services to large and small enterprises on its online data centers. It is the largest hosting provider in the United States. See Chapter 2, "Data Centers and LANs, Storage, and IP Private Branch Exchanges," for more information on Amazon's cloud computing. Amazon-Expansion and Diversification In addition to its cloud hosting services and the merchandise on its online site, Amazon developed a low- www.TechnicalPDF.com priced e-reader, the Kindle. The Kindle is promoted for downloading books and streaming its music, TV shows, and movies from Amazon's cloud. As well as web hosting and e-commerce, Amazon has branched out to providing streaming video, smart TVs, and the home automation devices Echo and Alexa. It also sells Fire tablet computers, and over the top streaming set-top box Fire TV. Fire TV is integrated into smart televisions Insignia, Best Buy's branded television, and Toshiba televisions. Amazon also provides its facial recognition system, Rekognition, to police departments. The system has a database of hundreds of identified images that it uses to compare to videos that capture unidentified perpetrators committing crimes and people in crowds. It is currently only 80 percent accurate. Advertising Amazon accepts advertising on its site. However, the ads are clearly marked as sponsored merchandise. In addition to ads on its own site, it also sponsors an ad network that places ads on web sites across the Internet. Subsidiaries and Purchases Amazon is continually looking at new products and services to offer and subsidiaries to purchase. The following are some of these subsidiaries: Goodreads: A site where people review and comment on books they've read. Twitch: A video game st