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The Internet is a global network connecting millions of computers. More than 190 countries are linked into exchanges of data, news and opinions.  According to Internet Live Stats, as of December 30, 2014 there was an estimated 3,037,608,300 Internet users worldwide. The number of Internet users represents nearly 40 percent of the world's population. The largest number of Internet users by country is China, followed by the United States and India.

In September 2014, the total number of websites with a unique hostname online exceeded 1 billion. This is an increase from one website (info.cern.ch) in 1991.

Unlike online services, which are centrally controlled, by design, the Internet is decentralized. Each Internet computer, called a host, is independent.  Operators can choose which Internet services to use and which localservices to make available to the global Internet community. Remarkably, this anarchy by design works exceedingly well. There are a variety of ways to access the Internet. Most online services offer access to some Internet services. It is also possible to gain access through a commercial Internet Service Provider (ISP).

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