An organization has a REST service and wishes to mediate the invocation of this REST service with
ESB. Any response going with HTTP "Location" headers from the back end REST service needs to be
to ESB, so that all traffic to the REST service goes through the ESB.
As shown in the above diagram, instead of directly talking to the REST service, UltraESB acts as the
proxy for all the requests going to the back-end server.