While it is widely believed that information technology is a major differentiator of logistics performance, there has been limited research that empirically tests or characterizes this relationship. The current research investigates the relationship between logistics information technology (LIT) and logistics service performance. The objective of this research is to develop a framework for managers to understand logistics information technology applications and to justify LIT expenditures. The results offer direction for characterizing logistics information technology. The research describes how internal logistics information integration and customer integration can influence customer service performance. These results begin to dimensionalize logistics information technology and the impact it has on strategy and performance.