Web server
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A web server is computer software that accepts requests via HTTP or its secure variant HTTPS. A user agent, commonly a web browser or web crawler, initiates communication by making a request for a web
The inside and front of a Dell PowerEdge server, a computer designed to be mounted in a rack mount environment. Servers similar to this one are often used as web servers.
Multiple web servers may be used for a high-traffic website.
Server farm with thousands of web servers used for super-high traffic websites
ADSL modem running an embedded web server serving dynamic web pages used for modem configuration
HTTP
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HTTP is an application layer protocol in the Internet protocol suite for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web
Tim Berners-Lee