HTTP abbreviates Hypertext Transfer Protocol. A web service usually relies on this to access at least its front page?. For instance, the front page of openpolitics.ca itself is accessed by:
* "http://openpolitics.ca"

The actual bits involved move via Internet Protocol.

An HTTP method is a verb defined within the protocol. An HTTP noun? is defined usually in the GFDL corpus namespace which is open content and so can be used in any web service whatsoever.

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