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World Wide Web Invented

March 1989 to August 1991.Networking.Invention.Date precision, month.Evidence grade, primary.2 primary sources

Drivers:

Interoperability needUser demandResearch breakthrough

CERN's need to share scientific information across heterogeneous systems drove the invention. Berners-Lee's insight was combining existing technologies (hypertext, internet, markup) into a universal, open system.

The World Wide Web is what most people mean when they say 'the internet'. It was invented in 1989 by Tim Berners-Lee at CERN, a physics laboratory. The Web lets you click links to jump between pages anywhere in the world. Before the Web, using the internet required technical knowledge; after, anyone could browse information.

World Wide Web Invented event plate

Structured atlas record showing date, domain, evidence grade, source count, and predecessor and successor links.

Event plate: World Wide Web Invented Convergence-divergence layout. The central hero card carries the event year, type, title, evidence grade, domain and era band. 0 predecessor cards on the left feed in with red arrows labelled "absorbs". 0 successor cards on the right derive with red arrows labelled "spawns". Key terms below the hero pin the vocabulary the event introduced. EVENT PLATE Source: https://www.w3.org/History/1989/proposal.html 1989 - INVENTION World Wide Web Invented primary evidence Domain: AI and machine learning Era band: E6 AI-scale systems KEY TERMS - VOCABULARY THE EVENT INTRODUCED World Wide Web HTTP HTML URL Convergence-divergence: predecessors absorbed, successors spawned Hero card carries year, evidence and domain. 0 predecessors flow in from the left; 0 successors flow out to the right. Key termsbelow pin the vocabulary the event introduced.

Forecasts and counterfactuals stay labelled as opinion in the event data. Source: Computer History Museum.

Before

Information at CERN was scattered across different systems, formats, and machines. Researchers struggled to share documents and data. Existing hypertext systems were isolated and did not work across networks. The internet existed but lacked a user-friendly way to navigate information.

What changed

Tim Berners-Lee invented the World Wide Web: a system combining hypertext with internet protocols. The Web introduced URLs (addresses), HTTP (transfer protocol), and HTML (document format). For the first time, anyone could publish and link to information accessible worldwide.

How it happened

Tim Berners-Lee proposed a 'distributed hypertext system' at CERN in March 1989. Working with Robert Cailliau, he developed the first web server (httpd), browser (WorldWideWeb), and HTML by late 1990. The first website (info.cern.ch) went live on 6 August 1991. CERN released the software into the public domain in April 1993.

Outcomes

  • Created the foundation for the modern internet experience
  • Democratised information publishing and access
  • Enabled e-commerce, social media, and the digital economy
  • Established hyperlinking as a fundamental information paradigm

Limitations

  • Original HTTP had no encryption (added later with HTTPS)
  • HTML was designed for documents, not applications
  • Decentralised nature made quality control difficult
  • Accessibility was not initially prioritised

Lessons learnt

  • Open standards enable explosive growth
  • Simple technologies can transform society
  • Public domain release accelerated adoption
  • Interoperability beats proprietary solutions

Stakeholders and artefacts

Organisations

  • CERNacademiaBirthplace of the Web, funded development
  • W3Cstandards_bodyLater standardisation (founded 1994)

Individuals

  • Tim Berners-LeeInventor, CERNInvented the World Wide Web, created HTTP, HTML, first browser and server
  • Robert CailliauCo-developer, CERNCollaborated on proposal, advocated for project funding

Artefacts

  • HTTP (Hypertext Transfer Protocol)protocolApplication protocol for transmitting hypermedia documents
  • HTML (HyperText Markup Language)specificationMarkup language for structuring web documents
  • URL (Uniform Resource Locator)specificationAddress format for locating resources on the Web
  • WorldWideWeb browsersoftwareFirst web browser, also an editor

Key terms

World Wide WebHTTPHTMLURLhypertextweb browser

Causality

Preceded by: Domain Name System Introduced; TCP/IP Protocol Suite Specified.

Made possible: HTTP Protocol Evolution: 1.0 to HTTP/3.

On this course

Read in the path How the Internet Works.

Sources

1Tim Berners-Lee. "Information Management: A Proposal". CERN, 1989-03.authoritativewww.w3.org/History/1989/proposal.html
2Tim Berners-Lee, Robert Cailliau. "WorldWideWeb: Proposal for a HyperText Project". CERN, 1990-11-12.authoritativewww.w3.org/Proposal.html