Fusion: Practice and Applications FPA 2692-4048 2770-0070 10.54216/FPA https://www.americaspg.com/journals/show/4190 2018 2018 College of Computing and Information Technology, Information Technology Department, Shaqra University, Riyadh 11961, Saudi Arabia Saleh Saleh The implementation of e-government initiatives remains a complex socio-technical challenge, particularly for administrations lacking structured knowledge of the Critical Success Factors (CSF) of E-government. The CSFs refer to the essential elements that must be effectively addressed to ensure the achievement of organizational objectives. In the context of E-government, CSFs encompass key determinants such as leadership commitment, technological infrastructure, user trust, policy support, and citizen engagement that collectively drive successful digital governance implementation. Governments often struggle to operationalize strategies and allocate resources effectively due to the absence of empirically grounded frameworks. To fill these gaps, this study combines systematic evidence synthesis, qualitative factor clustering, and quantitative multi-criteria validation to model and prioritize the interdependent CSFs governing sustainable e-government implementation across technological, organizational, human, environmental, and governance dimensions. The research employs a three-phase methodological pipeline: (1) Systematic Literature Review (SLR) guided by Preferred Reporting Items of Systematic Reviews and Meta-Analyses (PRISMA) standards to identify CSFs across more than 58 peer-reviewed studies; (2) Thematic Coding and Factor Clustering using NVivo-based qualitative content analysis to categorize determinants into organizational, technological, environmental, human, and governance domains; and (3) Analytic Hierarchy Process (AHP) Validation to assign relative weightings and interdependencies among identified factors. A total of 62 CSFs were extracted and classified under eight major domains: Strategic Planning and Governance, Planning and Execution Efficiency, Technical and Operational Aspects, User-Centric Focus and Quality Assurance, Technological Factors, Organizational Factors, Socio-Political Factors, and Economic Factors. Among these, User-Centric Focus and Quality Assurance (C₄) emerged as the most influential cluster with the highest global weight of 0.286, reflecting the growing emphasis on citizen trust, service quality, and satisfaction in digital governance systems. The top three CSFs identified through AHP were “Building Trust with Users” (LW = 0.266, GW = 0.033), “Visionary Leadership” (LW = 0.265, GW = 0.040), and “Comprehensive Planning” (LW = 0.275, GW = 0.038), representing the intersection of governance, user engagement, and execution excellence. This study contributes a decision-support framework that integrates both quantitative prioritization and qualitative contextualization, serving as a practical tool for policymakers, digital transformation officers, and public sector reform strategists. 2025 2025 138 170 10.54216/FPA.200212 https://www.americaspg.com/articleinfo/3/show/4190