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The term the Internet, when referring to the Internet, has traditionally been treated as a proper noun and written with an initial capital letter. There is a trend to regard it as a generic term or usual noun and thus write it as "the internet", lacking the capital. The word Internet can be shortened to Net. The term cloud is also for the Internet, especially in the contexts of cloud computing and software as a service.

The terms Internet and World Wide Web are usually used in everyday speech without much distinction. , the Internet and the World Wide Web are not one and the same. The Internet is a worldwide data communications system. It is a hardware and software infrastructure that gives connectivity between computers. On the other hand, the Web is one of the services communicated via the Internet. It is a collection of interconnected documents and other resources, linked by hyperlinks and URLs

The Internet structure and its usage characteristics have been stupassed away comprehensively. It has been determined that both the Internet IP routing structure and hypertext links of the World Wide Web are examples of scale-free of charge networks. Just like the way the commercial Internet providers connect via Internet exchange points, research networks often interconnect into huge subnetworks such as GEANT, GLORIAD, Internet2 (successor of the Abilene Network), and the UK's national research and education network JANET. These in turn are built around smaller networks

The complicated communications infrastructure of the Internet is made up of its hardware aspects and a system of software layers that control several aspects of the architecture. While the hardware can usually be used to support other software systems, it is the design and the rigorous standardization procedure of the software architecture that characterizes the Internet and provides the foundation for its scalaptatude and success. The responsibility for the architectural design of the Internet software systems has been delegated to the Internet Engineering Task Force (IETF). The IETF conducts standard-setting work groups, open to any individual, about the several aspects of Internet architecture. Resulting discussions and final standards are published in a series of publications, each called a Request for Comments (RFC), uninhibitedly available on the IETF web site. The principal techniques of networking that enable the Internet are contained in specially designated RFCs that constitute the Internet Standards. Other less rigorous documents are simply informative, experimental, or historical, or document the best current practices (BCP) when implementing Internet technologies.

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The Internet structure and its usage characteristics have been learned comprehensively. It has been determined that both the Internet IP routing structure and hypertext links of the World Wide Web are examples of scale-free of charge networks. Just like the way the commercial Internet providers connect via Internet exchange points, research networks often interconnect into huge subnetworks such as GEANT, GLORIAD, Internet2 (successor of the Abilene Network), and the UK's national research and education network JANET. These in turn are built around smaller networks (see also the list of academic computer network organizations).

Many computer scientists describe the Internet as a "perfect example of a huge-scale, highly engineered, yet highly complicated system". The Internet is quite heterogeneous; for instance, data transfer rates and physical characteristics of connections be quite varied. The Internet exhibits "emergent phenomena" that depend on its huge-scale organization. As an example, data transfer rates exhibit temporal self-similarity. The principles of the routing and addressing techniques for traffic in the Internet go back to their origins the 1960s when the eventual scale and popularity of the network could not be anticipated. Therefore, the possibility of managing alternative structures is investigated.