An electronic procurement system includes an administration module, a shopping module, and a service/analytics module. The administrative module may allow the building, customizing and management of catalogs. This may include approved supplier pricing and business rules, such as item restrictions and product substitutions. The shopping module allows end-users to browse shop and complete orders for preferred suppliers. This module may also allow users to compare items at the point of purchase. Finally, the service/analytics module allows for access to business analytics and to manage order workflow tasks, such as order approvals and user approvals.