Zero-Trust Architectures for Multi-Cloud Environments
Sunil Anasuri · International Journal of Emerging Trends in Computer Science and Information Technology · 2022
Multi-cloud strategies have become widespread, and this trend has brought a new level of complexity into enterprise IT infrastructure security. Perimeter-based models of traditional security are no longer sufficient in resource, identity, and workload environments that cross multiple heterogeneous cloud providers. Due to the nature of multi-cloud environments, the following paper suggests a Zero-Trust Architecture (ZTA) that follows the principle of never trust, always verify. The architecture provides constant identity questions, least access privilege, micro-segmentation, and conditional policy administration using federated identity management, software-defined perimeters, and dynamic policy engines. We consider the main issues of the implementation of Zero-Trust to multi-cloud deployments such as identity fragmentation, policy silos, complex operations, and risks of lateral movement. The architecture that is proposed can deal with these problems by including service meshes, API gates, and policy brokers in one place to allow cross-cloud interoperability and safe inter-service interaction. The targets of various performance measures are followed, which show measurable returns in threat identification and breach remediation, with tolerable trade-offs in terms of resource utilization and latency. Moreover, we talk about the implementation details like compliance auditing, scalability, or user experience. As our evaluation indicates, Zero-Trust outshines the traditional perimeter models in terms of security effectiveness and resilience in operations. Future directions are identified as concluding remarks, such as AI-based threat detection, automated policy generation and integration of quantum-resistant cryptographic capabilities to guarantee long-term flexibility and resilience of Zero-Trust in an evolving cloud environment