As technology extends its reach into every facet of the enterprise the need for a managed approach to enterprise systems becomes more and more critical. ERP and similar integrated enterprise-wide systems have revolutionized the way that organizations do business. Planning for and managing such integrated systems presents new and unique challenges. This unit presents some of the managerial issues involved in implementing and managing ERP systems. It explores the organisational and technical context necessary for effective enterprise systems development.  The unit also discusses the importance of planning and managing enterprise systems from an architectural perspective and highlights how an agile systems architecture can more effectively support changes in business strategy.