3 World-Wide Web and the Internet

3.6 How does the Web work?

3.6.4 HyperText Transfer Protocol (HTTP)

Language that Web clients and servers use to communicate with each other is HyperText Transfer Protocol (HTTP)
All Web clients and servers must be able to speak HTTP in order to send and receive hypermedia documents
Phrase "World-Wide Web" often used to refer to collective network of servers speaking HTTP as well as global body of information available using the protocol