From its inception, logistics focused on product storage and flow through the supply chain. Information flow and accuracy were often overlooked because they was not viewed as being critical to customers. In addition, information transfer rates were limited to manual processes. there are four reasons why timely and accurate information has become more critical in supply chain design and operation. First , customers perceive information regarding order status. Product availability, delivery tracking, and invoices as necessary dimension of day-to-day business operation. Customers demand real-time information. Second, with the goal of managing total supply chain assets, managers realize that information can be used to reduce inventory and human resource requirements. In particular, requirements planning based on timely information can reduce inventory by minimizing demand uncertainty. Third , information increases flexibility with regard to how, when, and where resources may be utilized to achieve competitive advantage. Finally , enhanced information transfer and exchange utilized the internet is facilitating collaboration and relationships. A common example of comprehensive information systems driving better supply chain utilization can be found in today's international shipping arena. it is common for firm to re-direct a container mid-transit based on real time feedback from local markets. this change, enabled by information technology results in higher service levels and simultaneously improved asset utilization