An enterprise information system (EIS) refers to any information system that improves the functions and processes of an organization through integration. Walmart is one of the Fortune 1000 companies known for its functional EIS. The company has an electronic data interchange (EDI) system it mainly uses in its procurement activities. The EDI system allows the company to transfer critical data through the internet. Given the size of this organization, the EDI system enables it to monitor the movement of products in stores.