EDI (Electronic Data Interchange) is currently recognized as the most widely utilized information technology in distribution channels and is being employed as a communication method replacing conventional approaches. Prior studies on successful EDI implementation or the factors determining its effectiveness have examined performance dimensions—such as cost, competitiveness, or the diffusion of EDI—separately, resulting in inconsistent findings even for identical influencing factors. Furthermore, the concepts themselves were largely theoretical, limiting their practical applicability. In this study, EDI adoption performance is categorized into effectiveness and usage volume, as well as internal and external firm performance, and the factors influencing each type of performance are identified, revealing that different influencing factors operate depending on the targeted performance outcome. Additionally, prior research on problems arising after EDI adoption and their solutions studied problems and solutions separately or without considering the firm's circumstances, thus offering limited practical guidance. This study identifies problem types according to each desired performance outcome and proposes effective solutions by comparing firms with high EDI adoption performance against those with low performance.