Attribute-based access control (ABAC)

Attribute-based access control (ABAC) is a dynamic security model that determines access to resources by evaluating a set of attributes rather than relying on static roles. These attributes encompass characteristics of the user (e.g., department, clearance level), the resource (e.g., classification, owner), the action being requested (e.g., read, write, delete), and environmental conditions (e.g., time of day, location, device posture). Policies are defined to combine these attributes into fine-grained rules that are assessed in real-time, making every access decision fully context-aware.

As a cornerstone of modern Identity & Access Management (IAM) frameworks, ABAC enforces the principle of least privilege with exceptional precision. Its policy-driven nature makes it highly adaptable to complex, hybrid, and cloud environments where traditional models like role-based access control (RBAC) often fall short. By delivering flexible, scalable, and context-sensitive authorization, ABAC helps organizations protect sensitive data, meet regulatory compliance requirements, and maintain a resilient security posture against evolving threats.