Abstract: In order to gain competitive advantage in the knowledge-based economy, businesses are focusing on the value creation along the demand and supply chains. Information systems strategies have also evolved from the focus of automation of discrete transactions to the enablement of the optimization of the value chain. The new paradigm requires the alignment of information systems strategies with business strategies across the entire value chain. An integrated model is required to allow the coordination of activities and sharing of information amongst different organizations and systems through various processes across the extended enterprise. This paper proposes an enterprise framework for the development of information systems strategies and plans. It further presents an approach for IS planning that has been practiced and refined through many IS/IT planning projects.