The InternetThe Internet is a global system of interconnected computer networks that communicate using protocols defined in the Internet Protocol Suite (TCP/IP). A central component of this suite is the Internet Protocol (IP), which provides a system for addressing and routing data (datagrams) between networks. The Internet developed from early U.S.-based research networks, mainly ARPANET and NSFNET, which were originally created for academic and research purposes. During the late 1980s and early 1990s, the modern Internet began to take shape as policy changes and increasing demand led to the transition from publicly funded networks to commercial network providers. The development and promotion of Internet standards is supported by organisations such as the Internet Society, alongside other bodies including the Internet Engineering Task Force (IETF), which develops many of the core technical standards. Over time, the way people connect to the Internet has changed significantly. Early users relied on desktop computers with dial-up connections, whereas by 2025, smartphones using wireless mobile networks have become a common means of access.