Scalable Identity and Access Management Frameworks for Hybrid and Multi-Cloud Platforms
DOI:
https://doi.org/10.22399/ijcesen.5144Keywords:
Identity and Access Management, Hybrid Cloud, Multi-Cloud Security, Zero Trust Architecture, Access Control ModelsAbstract
The development of hybrid and multi-cloud computing has a high rate of adoption and has had a paradigm shift on the IT infrastructure of the enterprise, making it scaled, flexible, and resilient. Nonetheless, this change has come with critical issues of controlling identities and access in the heterogeneous and distributed settings. Identity and Access Management (IAM) is a very vital element in the process of securing the cloud resources because the systems are only accessed by authorized parties with certain condition. Most of the traditional IAM models that were created with centralized backgrounds are not sufficient in cutting across the complexities of the multi domain cloud ecosystems. This paper will give an overview of scalable IAM frameworks on hybrid and multi-cloud systems. It discusses the development of the IAM architectures, such as centralized, federated, and decentralized models, and the suitability of those in the distributed cloud environment. The paper also examines access control models like Role-Based Access Control (RBAC),Attribute-Based Access Control (ABAC) and policy-based models with emphasis on their advantages and shortcomings in the provision of fine-grained and scalable authorization. Also, the paper addresses how Zero Trust Architecture (ZTA) and cloud-native IAM practices can be integrated, focusing on the continuity of authentication, least privilege access, and workload identity policy. The main issues like the interoperability, identity sprawl, policy inconsistency, and performance overhead are deeply examined. There are also investigations of emerging trends, such as identity decentralization and IAM based on AI. The results show that there is no one IAM model which can meet the needs of hybrid and multi-cloud environment. Rather, it is a mix of federated approaches, policy-oriented approaches, and approaches based on Zero Trust, which is needed to ensure scalability and security. The review gives us an idea of the current studies, and future expectations of coming up with an unified and adaptive IAM frameworks.
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