This review examines the application of tiered architecture in Multi Cloud Databases to enhance security and service availability. By distributing database functions across multiple cloud tiers, the approach improves fault tolerance, load balancing, and data protection. The study analyzes security mechanisms such as access control and encryption alongside availability strategies like redundancy and failover. These insights demonstrate how tier-based MCDB designs support reliable, secure, and scalable data management for modern cloud-driven applications.
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2020 ICCSEA Conference, IEEE.
https://doi.org/10.1109/ICCSEA49143.2020.9132931