An information exchange platform receives a file from a client system and processes the file for delivery to a trading partner (TP) of the client system. The TP does not need to be a client of the information exchange platform. So long as the file has some identifying information such as an email address that uniquely identifies the TP within a custom solution for the client system, the information exchange platform can automatically and programmatically provision the TP. An auto-provisioning subsystem is operable to create and/or configure information needed to complete the processing of the file just in time, including creating a legal entity and a routing address for the TP. When completed, the file is processed into a deliverable, which is then provided for delivery to the TP just in time as the file is received from the client system.