"So no, it's not a buzzword, it's just a concept." I think REST is quite clearly a buzzword. That doesn't mean it's not also a well defined concept; just that

"So no, it's not a buzzword, it's just a concept." I think REST is quite clearly a buzzword. That doesn't mean it's not also a well defined concept; just that it's fashionable to use the term even when that concept doesn't apply very well.