1 Introduction 1.1 Research Background 1.2 Research Objectives and Questions 1.3 Significance of the Study 1.4 Research Structure 2 Research Background 2.1 Overview of Cloud Computing 2.1.1 Definition 2.1.2 Deployment Models 2.1.3 Service Models 2.1.4 The Characteristics of Cloud Service 2.1.5 Evolution of Cloud Computing 2.1.6 Previous Research on Cloud Services Adoption 2.1.7 Previous Research on Cloud Services Post-adoption 2.2 Theoretical Background 2.2.1 Stimulus-Organism-Response (S-O-R) Framework 2.2.2 Theory of Reasoned Action (TRA) 2.2.3 Theory of Planned Behavior (TPB) 2.2.4 Technology Acceptance Model (TAM) 2.2.5 Unified Theory of Acceptance and Use of Technology(UTAUT, UTAUT2) 2.2.6 Task-Technology Fit (TTF) 2.2.7 Expectation Confirmation Model (ECM) 2.2.8 IS Success Model 3 Research Model and Hypotheses 3.1 Research Model 3.2 Research Hypotheses 4 Research Methods 4.1 Measurement Development 4.2 Data Collection 5 Analysis and Results 5.1 Measurement Model 5.2 Structural Model 6 Discussions and Implications 6.1 Discussions 6.2 Implications 6.3 Limitations and Future Research References Appendix A: Questionnaire for Study