As hybrid cloud infrastructure becomes more prevalent in organizations, the need for dynamic and resilient securitySecurity frameworks is increasingly vital. This study proposes a robust conceptual model that integrates end-to-end encryption (E2EE), decentralized access control (DAC), and proactive vulnerability management (PVM) into a unified framework. The paper addresses significant gaps in encryption, access control, and incident response identified through structured questionnaires and expert interviews in critical sectors. Findings revealed that 65% of organizations used hybrid cloud networks; however, only 35% employed E2EE and just 20% implemented DAC, underscoring notable weaknesses in current cloud securitySecurity practices. Additionally, 82% of respondents indicated that an integrated approach combining E2EEEnd-to-end encryption, DACDecentralized access control, and PVM would be ideal for their organizations. The results highlight the high organizational need for such a system, confirming its relevance and appropriateness. The proposed model enables secure data transmission, removes single points of failure, facilitates early threat detection, and fuses technical innovation with regulatory complianceRegulatory compliance. This sector-sensitive, scalable framework offers a forward-looking foundation for securing complex and distributed infrastructures. Future research will explore its application across various sectors, with planned extensions incorporating AI-driven threat detection and automated response systems.