Business analytics systems create value and provide competitive advantage for organisations. We argue that operational and dynamic business analytics capabilities can explain how value is created, sustained and renewed. We develop an evolutionary, process-oriented theoretical framework that describes how dynamic and operational business analytics capabilities interact over time to create value. We use the framework to explain how business analytics systems were integrated with the enterprise environment in a longitudinal case study of a large financial institution. A number of key factors for success with business analytics systems are identified.