As the national oil company of South Africa, PetroSA's business spans the entire petroleum value chain. The company refines diesel, gasoline, kerosene, and specialty products as well as more than 1 Tcf of natural gas. Although PetroSA has used the PI System for over 20 years, it recently re-evaluated its role while centralizing and standardizing a diverse range of operational and business functions. PetroSA's Senior Business Architect Rubin Boer discussed the impact of evolving the PI System from historian to real-time operational repository had on overall performance of PetroSA's operational and business processes.