This paper explores the application of Enterprise Resource Planning (ERP) in the banking industry with a focus on Westpac Banking Corporation. It covers business processes, requirements, system requirements, software and vendor selection, and ways companies utilize ERP to improve business efficiency. The paper suggests that Oracle ERP software is the best software for Westpac Bank due to its flexibility, relatively low cost, high-security features, and easy integration of cloud and on-premise ERP systems.