customer information system (CIS)

Software used by a utility or other market participant for maintaining customer and billing information. The CIS often includes a history of work performed for each customer.

In Field Deployment Manager (FDM) systems, the CIS produces the data for all primary work orders and receives all work order completion data from FDM.

From the perspective of Advanced Metering Manager (AMM) application, an application system that stores meter and customer data.