"You can’t have evolvability if clients have their controls baked into their design at deployment. Controls have to be learned on the fly. That’s what hypermedia enables." (R. Fielding)…
The Web is self-describing
"The Web is self-describing. We get a document and we know how to retrieve additional information by following links.” (B. Burke)…
Application state vs. resource state
Yet another article (with a nice running example) on statelessness and HATEOAS…