The vast, global internet of today had rather humble origins when it initiated. In 1969, the Department of Defense Advanced Research Projects Agency (ARPA) developed an experimental network called ARPAnet to link together four supercomputing centres for military research. This network had the many and difficult design requirements that it had to be fast, reliable, and capable of withstanding a nuclear bomb destroying any one computer center on the network. From those original four computers, this network evolved into the sprawling network of millions of computers we know today as the internet.
The internet itself is really a massive "network of networks." There is no central "Internet, Inc," to which you can connect. Essentially, it is a collection of Internet service providers (ISPs) who each operate their own networks, with their own clients, and agree to interconnect with each other and exchange packets. Many of the large ISPs sell connections to their network to smaller ISPs, some of whom again sell connections to other ISPs.
Ultimately, these ISPs at all levels sell connections to individuals and corporations, who then merge their networks (or individual computers) into this larger network called the internet.
While there is no exact governance of the Internet, communication standards and coordination of ISP actions are overseen by a nonprofit organization called the Internet Society.
An affiliated organization, the Internet Engineering Task Force (IETF) coordinates the work of numerous committees that define Internet communication standards and research methods of explaining and improving Internet communication. The actual communication standards are referred to as RFCs (Requests for Comments) and are voluntarily adhered to by all ISPs.
Internet uses can be simply categorized as publishing and getting information on various subjects like marketing, management, science, new technologies, training materials, jobs, higher education, mathematics, music, games, software, etc. and E-Commerce
And the kind of information available in the internet can also be listed as text documents, graphic files, sound and video files, downloadable games and software, demo games and software, etc.
At the speed the internet has been evolving, many predictions can be made about the internet in the future, like main communication method coming with functions of being translated automatically into the language preferred by the receiver, finding a tune through humming into the microphone, virtual tours of a house, car, etc. could become common thing.
This is what the Internet has become today, starting from its modest birth in 1969, to become an indispensable service for the human race at present and will remain the same in the future.