Resumen
Internet's ultimate utility depends on ability and willingness to make the network at least as pervasive, convenient and invisible as electricity is today. Internet is ubiquitous, always available, and always on, but has so far missed that any device could be plugged in at any location and it would be as invisible as electricity. Basically, the mistake regarding anything being plugged in at any location was that Internet's Transmission Control Protocol/Internet Protocol (IP) assumed that end users and their devices and IP addresses would all be found in the same location and would all be tightly coupled. The fact is that end users today do not always access the Internet from fixed locations, do not always use the same device, and the IP address they use may not be one familiar to every sub network they encounter in their travels, indeed, they may use different IP addresses when on the move. That is, users are nomads and issues associated with nomadic computing were not anticipated by the network protocols that grew up in the Internet.

Resumen
The Internet has revolutionized computers and communications world like nothing before. The telegraph, telephone, radio and computer have all set the stage for the Internet's unprecedented integration of capability. The Internet is at once a worldwide broadcasting capability, a mechanism for information dissemination, and a medium for collaboration and interaction between individuals and their computers without regard for geographic location. The Internet also represents one of the most successful examples of sustained investment and commitment to research and development in the information infrastructure. Beginning with early research in packet switching, the government, industry, and academia have been partners in evolving and deploying the Internet, the exciting new technology. The Internet today is a widespread information infrastructure, the initial prototype of what is often called the National Information Infrastructure. Its history is complex and involves many aspects like, technological, organizational and community.