As strange as it may sound, but the "world wide web" and the "Internet" things are completely different, at least not exactly identical. The Internet can be called a global or worldwide network, while the World Wide Web is an information space built on the basis of the Internet.
Internet
Initially, the Internet was a computer network for transmitting information, developed at the initiative of the US Department of Defense. The reason was given by the first artificial Earth satellite launched by the Soviet Union in 1957. The US military decided that in this case, they needed an ultra-reliable communications system. ARPANET was not a secret for long and soon began to be actively used by various branches of science.
The first successful telecommuting session took place in 1969 from Los Angeles to Stanford. In 1971, the instantly popular program for sending e-mail over the network was developed. The first foreign organizations to connect to the network were in the UK and Norway. With the introduction of the transatlantic telephone cable to these countries, ARPANET has become an international network.
ARPANET was arguably the most advanced communication system, but not the only one. And only by 1983, when the American network was filled with the first newsgroups, bulletin boards and switched to using the TCP / IP protocol, which made it possible to integrate into other computer networks, ARPANET became the Internet. Literally a year later, this title began to gradually move to NSFNet - an interuniversity network that had a large bandwidth and gained 10 thousand connected computers in a year. In 1988, the first Internet chat appeared, and in 1989 Tim Berners-Lee proposed the concept of the World Wide Web.
World wide web
In 1990, ARPANET finally lost out to NSFNet. It is worth noting that both of them were developed by the same scientific organizations, only the first was commissioned by the US defense services, and the second was on its own initiative. however, this competitive pair led to scientific developments and discoveries that made the world wide web a reality, which became generally available in 1991. Proponent Berners Lee over the next two years developed the HTTP (hypertext) protocol, HTML, and URL identifiers that are more familiar to ordinary users as Internet addresses, sites, and pages.
The World Wide Web is a system that provides access to files on a server computer connected to the Internet. This is partly why today the concepts of the web and the Internet are often substituted for each other. In fact, the Internet is a communication technology, a kind of information space, and the World Wide Web fills it. This spider web consists of many millions of web servers - computers and their systems that are responsible for the operation of websites and pages. To access web resources (download, view) from a regular computer, a browser program is used. Web, WWW are synonyms for the World Wide Web. WWW users number in the billions.
