Efforts to develop OIS were begun, spearheaded by the company's billing department. Subsequently, they tried Microsoft's MSMQ message queuing system, code-named Falcon, to access their legacy applications. This solution also failed to meet the company's requirements. EDA provides enterprise-wide data integration to simplify the process of connecting customers, employees, and partners to the Web without uprooting decades of investments in systems and data. The system was completed in September of the same year.
Customers use the Web to enter information and call up their payment histories.
The system employs digital certificates to extend credit to customers against outstanding invoice balances. Or customers can pay by credit card, integrated with the IBM Payment Server solution. The full-scale rollout of OIS took place in November 1999. As of January 2000, OIS had more than 7,500 registered users. Predicting a substantial increase in Web traffic, Cordoba has proposed using EDA Copy Manager to migrate the invoice data to a relational database.