Research on Multi-Cloud Security Provisioning focuses on ensuring data confidentiality, integrity, and access control across multiple cloud platforms while maintaining interoperability and scalability. Modern approaches combine advanced encryption techniques, federated access control, and identity management frameworks to enable secure data sharing and governance in heterogeneous cloud environments. Machine learning and anomaly detection methods are increasingly applied to identify and mitigate security threats in real time. Policy-driven and automated security mechanisms ensure compliance with regulatory requirements and protect against insider threats, unauthorized access, and data breaches. Overall, multi-cloud security provisioning aims to provide a robust, adaptive, and resilient framework that safeguards sensitive information while supporting seamless collaboration and resource utilization across distributed cloud infrastructures.