![]() Data centers have very fast internet connections, allowing them to serve many users simultaneously. ![]() Others are commercial facilities that provide service to many smaller websites. Some are owned by large companies such as Google and Facebook. Data centers are rooms full of servers that store user data and host online apps and content.Wireless internet service accounts for a large and growing share of all internet usage. The last mile also includes the towers that allow people to access the internet with their cell phones. Finally, a significant but shrinking number use outdated DSL service provided over telephone cables. Of the remaining 40 percent, a growing fraction use new fiber optic cables, most of which are part of Verizon’s FiOS program or AT&T’s U-Verse. Currently, about 60 percent of residential internet connections in the United States are provided by cable TV companies such as Comcast and Time Warner. The last mile is the part of the internet that connects homes and small businesses to the internet. Other popular Internet applications include email and BitTorrent. But in reality, the web is just one of many internet applications. Indeed, the web has become so popular that many people incorrectly treat the internet and the web as synonymous. Most people access internet content using a web browser. Instead, thousands of different organizations operate their own networks and negotiate voluntary interconnection agreements. No one owns the internet or controls who can connect to it. The internet is notable for its decentralization. Today it is used by more than 2 billion people around the world. It began as an academic research project in 1969, and became a global commercial network in the 1990s. The internet is the world’s most popular computer network.
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