The internet feels like it has always existed, but it is a comparatively recent invention — a little over 55 years old — that has reshaped human life within a single lifetime.

It began in 1969 with ARPANET, a U.S. government-funded project connecting four university computers: UCLA, Stanford Research Institute, UC Santa Barbara, and the University of Utah. The goal was a resilient network for research and defense purposes, not entertainment or everyday communication.

Through the 1970s and 1980s, key technologies emerged: email, TCP/IP (the protocol still underlying the internet today), and the domain naming system. Tim Berners-Lee invented the World Wide Web at CERN in 1989 and built the first browser and web server; the technology became available for public use outside CERN in August 1991.

The 1990s brought the internet into homes worldwide through dial-up connections, early search engines, and the first wave of websites. The 2000s introduced broadband, social media, and smartphones, changing how people communicate, work, and consume information. Today’s internet is increasingly shaped by AI — search, recommendations, and content generation are driven more and more by machine learning. As of April 2026, an estimated 73.8% of the global population were internet users, according to DataReportal’s most recent Digital Report.

References

• CERN — “A Short History of the Web” — https://www.home.cern/science/computing/birth-web/short-history-web

• DataReportal — Digital 2026 Global Overview Report (internet penetration, April 2026 update) — https://datareportal.com/reports/digital-2026-global-overview-report • Internet Society / Leiner et al., “Brief History of the Internet” (ARPANET origins) — https://www.internetsociety.org/internet/history-internet/brief-history-internet/