Who is Vinton Cerf? Meet the father of the internet and the people who built the web

Vinton Cerf's retirement from Google after more than two decades as the company's Chief Internet Evangelist has reignited an old debate in technology about Who actually invented the internet?Cerf, 83, is frequently described as one of the "fathers of the internet" for co-designing TCP/IP, the communication protocols that allow computer networks around the world to exchange data. But despite the title, there is no single inventor of the internet.Unlike products such as the iPhone or the World Wide Web, the internet evolved over several decades through the work of multiple researchers, engineers and computer scientists, each solving a different piece of the puzzle.Vinton Cerf: The man who helped connect the world's networksCerf worked alongside Robert Kahn in the 1970s to develop TCP/IP (Transmission Control Protocol/Internet Protocol), the set of networking rules that became the internet's universal language.When TCP/IP became the standard protocol in 1983, previously disconnected computer networks could communicate with one another, laying the technical foundation for today's internet.Cerf joined Google in 2005 as Chief Internet Evangelist, where he focused on internet accessibility, digital policy and emerging technologies. He has also worked with NASA on concepts for an "interplanetary internet" designed for space communications.Robert Kahn: Cerf's co-architectRobert Kahn is equally credited with inventing TCP/IP. While working at the US Defense Department's Advanced Research Projects Agency (ARPA), Kahn envisioned a system that could connect different kinds of networks. He partnered with Cerf to develop the protocols that made that vision possible. Today, both Cerf and Kahn are jointly recognised as the principal architects of the internet's communication standards.Tim Berners-Lee: The inventor of the Web, not the internetPerhaps the most common misconception is confusing the internet with the World Wide Web. The internet is the global network connecting computers. The World Wide Web is the system of websites that runs on top of that network.In 1989, Tim Berners-Lee created HTML, HTTP, URLs and the first web browser while working at CERN, making the internet dramatically easier for ordinary people to use. Without Berners-Lee, there would likely be no websites as we know them today—but the internet itself already existed.Lawrence Roberts: The architect behind ARPANETBefore TCP/IP came ARPANET, the world's first large-scale packet-switched computer network. Lawrence Roberts led the project at ARPA, overseeing the network that eventually evolved into the internet. Many historians consider ARPANET to be the internet's direct predecessor.Leonard Kleinrock: The scientist behind packet switchingIn the early 1960s, Leonard Kleinrock developed the mathematical theory of packet switching, proving that digital information could be broken into smaller packets, transmitted efficiently across shared networks and reassembled at its destination. That principle remains fundamental to how internet traffic moves today.Paul Baran and Donald Davies: The pioneers of packet networkingWorking independently in the United States and the United Kingdom, Paul Baran and Donald Davies developed practical packet-switching systems. Davies also coined the term "packet", which has remained part of networking terminology ever since.Why can we not say that the internet was a single person's effort?The internet was not invented by a single person but has rather evolved through decades of collaborative research and technological breakthroughs. Its development is best understood as a layered innovation, with different pioneers contributing foundational technologies at different stages.Paul Baran, Donald Davies and Leonard Kleinrock laid the groundwork by developing the theory and practical concepts of packet switching, which made efficient data transmission possible. Lawrence Roberts then led the creation of ARPANET, the first large-scale packet-switched network and the direct precursor to the modern internet.Building on that foundation, Robert Kahn and Vinton Cerf co-developed the TCP/IP protocols, enabling independent computer networks to communicate seamlessly and forming the backbone of today's internet. Later, in 1989, Tim Berners-Lee invented the World Wide Web by introducing technologies such as HTML, HTTP and URLs, making the internet significantly easier for people around the world to access and use.