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This framework integrates various technological and methodological approaches to improve service delivery and efficiency. It incorporates service-oriented architecture (SOA), event-driven architecture (EDA), ontologies, a refined software development lifecycle methodology, and the interoperability practical implementation support (IPIS) approach. The study pinpoints key factors impacting e-government system implementation and interoperability in Botswana through interviews, questionnaires, and observation. It also identifies essential technical components for E-Government Interoperability. The e-GSOIF framework is evaluated against the original IPIS framework using exploratory factor analysis and compatibility assessment with predefined functionality criteria, demonstrating its superiority. This article targets government officials, IT specialists, researchers, and students interested in e-government services interoperability. 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