After reading a lot about the differences between REST and SOAP, I got the impression that REST is just another word for HTTP. Can someone explain what functionality REST adds to HTTP?
Note: I'm not looking for a comparison of REST versus SOAP.
Update: Thanks for your answers. Now it has become clear to me that REST is just a set of rules about how to use HTTP. Hence I posted a follow-up about what the advantages of these conventions are .
Note: I now grasp the meaning of REST; as Emil Ivanov remarks, REST means using HTTP the way it's meant to be. However, I'm not sure whether this deserves a term of its own, and I certainly don't get the hype around it.