The In and Out Mediators act as predefined filters. Messages, which are in the in path of the ESB will traverse through the child mediators of the In Mediator. Messages, which are in the out path of ESB will traverse through the child mediators of the Out Mediator.
Messages coming to the ESB will be sent using
wsa:to address and responses will be sent back to the requester.
Do not use these mediators in proxy service sequences, as proxy services have the predefined sequences <inSequence> and <outSequence> for this purpose.