1990
CERN httpd pilot
“Hit GET and the paper appears.” Tim Berners-Lee ran CERN’s first web daemon so researchers could share linked docs.
Toward the end of 1990 Berners-Lee launched the httpd
daemon on a single NeXT cube. “When a browser sends GET, the server finds the HTML file and ships it back,” he told a colleague. Once CERN's intranet page went live, researchers began linking their experiment notes to one another.
The code first circulated internally, then in mid-1991 an email list released it to other labs. Word spread quickly: “HTTP is light, HTML is easy.” The notion of a web server solidified.
CERN httpd primarily served static files but also listed directories and triggered simple scripts, paving the way for CGI. The pattern of accepting a request, interpreting it, and returning a response was set, allowing later WAS platforms to plug in business logic while reusing the same flow.