Milestones in Evolution History of The Internet

In 1969, the first prototype of the Internet was built inwhat is known as  ARPAnet, funded by the U.S. Department of Defense, where the first message was sent between only two devices followed by a network of four devices, connected via the Interface Message Processor (IMP),  and located in Los Angeles, Stanford, Santa Barbara, and the University of Utah, where transfer of files was made available between these devices as well as remote printing.

In 1971, Ray Tomlinson developed the email where he used the code @ to refer to sending a message from one device to another.

At the end of the 1970s, ARPAnet was not the only network of its kind, but many new networks emerged, such as CSNET, CDnet (Canadian Network), BITNET (Because It's Time Network) and The National Science Foundation Network before commercial networks subsequently spread.

In 1983, ARPAnet adopted  protocols(TCP/IP)instead of  NCP, which enabled communication between these networks and the term internet was used to describe the connection between those networks.

With the advent of Internet service providers, hosting websites for email began to emerge some of which have become famous in subsequent years, such as America Online (AOL).

In 1989, World Wide Web emerged  as the embodiment of human knowledge, representing a vast area of information such as documents, content and video, accessed over the Internet and using the HTTP protocol in the process of communication between content and the user.

In 1992, the volume of data on the Internet was 100 GB per day, and this figure grew exponentially as the number of users increased. 

In 2014, the peak reached 16,000 Gigabytes per second, with the number of Internet users increasing from 413 million in 2000 to more than 3 billion in 2016.