ASMX Service Through HTTP Get vs REST

What is the difference between an asmx serv开发者_如何学运维ice that allows people to access it via http GET (or POST), without using SOAP requests vs a restful web service?

There is no difference. A RESTful service could be implemented using any server side technology including ASMX. Also a RESTful doesn't imply the usage of a GET verb. In a RESTful service you are using all the HTTP verbs. It's just that there are no SOAP envelopes.