A system Integrator (SI) makes a consortium with multiple providers of hardware and software solutions to sell an information system. The success of information systems (IS) mainly depends on establishing a trustful relationship between SI supplier and client, and delivering high-quality system. However, the determinants of trust and system quality have been investigated mostly from the perspective of system buyers rather than system sellers. This study examines the influence of key variables that SI can handle to improve trust and system quality which finally leads to user satisfaction toward SI. This study adopts resource complementarity, user participation and information sharing as the key variable then builds a research model to explain their relationships to user satisfaction. Respondents are recruited from 251 firms that have built any information system in recent two years in South Korea. Results of partial least square (PLS) modeling analysis show that both resource complementarity and information sharing have positive relationships with trust. Also the relationships between trust, system quality and user satisfaction toward S.I are supported. In addition, the mediating roles of trust and system quality are identified. We discussed some of the key managerial and theoretical implications of the paper and suggested further research directions.

Abstract
 1. Introduction
 2. Theoretical Review
  2.1. SI and System Success
  2.2. Drivers of System Quality
  2.3. Importance of Trust
 3. Hypothesis Development
 4. Method
  4.1. Sample
  4.2. Measurement
 5. Results
  5.1. Reliability and Validity
  5.2. Test Results
 6. Conclusions
  6.1. Implications
  6.2. Limitations
 References

• Jongkun JUN(Division of Global Business and Technology, Hankuk University of Foreign Studies)
• Won-Jun LEE(Business Department, Cheongju University) Corresponding Author.
• Jongki JUNG(Department of International Business, Hankuk University of Foreign Studies)