Internet represents the worldwide interconnected network system utilising the Internet protocol suite (TCP/IP) for communication between diverse networks and devices. This comprehensive network of networks encompasses private, public, academic, business, and governmental networks spanning from local to global reach, interconnected through electronic, wireless, and optical networking technologies. The Internet facilitates an extensive array of information services and resources, including interconnected hypertext documents and applications comprising the World Wide Web (WWW), electronic mail, discussion groups, internet telephony, streaming media, and file sharing capabilities.
Traditional communication media, including telephone services, radio broadcasting, television transmission, physical mail, print publishing, and newspaper distribution, have undergone fundamental transformation through Internet integration, giving rise to innovative media formats such as email, online music platforms, digital newspapers, news aggregation services, and audio and video streaming websites. The Internet has enabled and accelerated novel forms of interpersonal communication through instant messaging, Internet forums, and social networking platforms. E-commerce has expanded significantly across various industries, allowing businesses to extend their physical retail operations to serve broader markets. Business-to-business and financial services conducted via the Internet have reshaped supply chains throughout multiple industrial sectors.
The Internet's origins trace to pioneering research that facilitated computer resource time-sharing, packet switching development, and computer network design for data communication. The communication protocols enabling Internetworking emerged from research and development initiatives commissioned during the 1970s by the Defense Advanced Research Projects Agency (DARPA) of the United States Department of Defense, in collaboration with academic institutions and researchers spanning the United States, United Kingdom, and France.
The Internet operates without centralized governance regarding either technological implementation or access and usage policies. Each constituent network establishes its own specific regulations. The comprehensive definitions governing the two primary name spaces on the Internet—the Internet Protocol address (IP address) space and the Domain Name System (DNS)—are managed by the Internet Corporation for Assigned Names and Numbers (ICANN). The technical foundation and standardization of core protocols represent the work of the non-profit Internet Engineering Task Force (IETF).