Abstract: A method is provided of operating a web-based system to facilitate interactive exchange and modification of design requirements within a design requirements package between an enterprise and a supplier to the enterprise. The method comprises storing, by the enterprise, a design requirements package in an enterprise database. The method further comprises electronically by a processor, transmitting a message from the enterprise to the supplier to notify the supplier of the availability of the design requirements package stored in the enterprise database. The method also comprises accessing, by the enterprise, the design requirements package and supplier deliverables to view modifications made by the supplier to the package after the supplier has been notified of the availability of the package and has accessed the package in the enterprise database and made modifications to the package.