EFFICIENT MULTITENANT ARCHITECTURES FOR CLOUD DATABASE SYSTEMS

Abstract

Cloud computing has transformed how organizations deploy, manage, and scale applications by offering flexible, scalable, and cost-efficient infrastructure. A fundamental capability that enables this efficiency is multitenancy—the ability of a single software or database instance to serve multiple customers (tenants) while maintaining strong data security and isolation. This paper explores the design and implementation of efficient multitenant architectures for cloud-based database systems. It examines their benefits, limitations, and challenges, focusing on data-at-rest security, data extensibility, and cloud application design principles. The discussion integrates modern cloud security frameworks, including the Shared Responsibility Model, the Cloud Security Alliance Cloud Controls Matrix (CCM), the Zero Trust Security Model, and the NIST Cloud Computing Reference Architecture. The study concludes with recommendations for designing robust, scalable, and compliant multitenant database systems that balance performance, cost, and security.