Adaptive Intelligence for Zero Trust (AIZT): An AI-driven Conceptual Framework for Proactive Cloud Cybersecurity Infrastructure

Enterprises increasingly rely on cloud infrastructures to support distributed workloads, yet these environments are highly vulnerable to insider threats, privilege escalation, and sophisticated adversarial attacks. Traditional perimeter-based security and static Zero Trust (ZT) frameworks struggle to adapt to evolving risks in multi-tenant, dynamic cloud settings. This study introduces the Adaptive Intelligent Zero Trust (AIZT) model, an AI-driven architecture designed to enhance enterprise cybersecurity by combining continuous authentication, dynamic access control, and real-time anomaly detection. The methodology employs conceptual modelling, simulation in cloud-based testbeds, and benchmarking against baseline and state-of-the-art ZT approaches. Using enterprise log datasets, synthetic attack traces, and threat intelligence repositories, AIZT was trained with machine learning and deep learning algorithms for adaptive trust scoring and policy enforcement. Experimental evaluation demonstrated that AIZT achieved higher fidelity (0.95), interpretability (0.90), efficiency (0.88), robustness (0.91), and human trust (0.93) compared to competing models, while maintaining acceptable computational overhead and near real-time response latency. The findings confirm that AIZT improves technical accuracy, resilience, and administrator confidence, positioning it as a practical framework for enterprise-scale cloud environments. The contributions of this work include a conceptual framework, mathematical formulation, and simulation-based validation of AI-enhanced ZT enforcement. Future research directions include federated learning integration, cross-cloud trust models, and large-scale deployment in real-world enterprise systems. Overall, AIZT provides a significant advancement toward intelligent Zero Trust architectures for adaptive and predictive cybersecurity in cloud environments.