Recently, SaaS(Software as a Service) as a new type of information systems has become popular. Many information systems practitioners and academics, consequently, pay their attention to SaaS. However, there are very few empirical studies on SaaS success factors because of its short adoption history. This study, therefore, tries to identify a variety of success factors of its adoption and examines how these factors affect organizational performance using an exploratory approach. For this purpose, this study collects data from 132 Korean companies and analyzes the relationship between success factors and organizational performance. Our results are likely to help provide useful guidelines for the successful SaaS adoption.