Access Control & RBAC Implement secure access control systems with fine-grained permissions using RBAC, ABAC, or hybrid approaches. Access Control Models | Model | Description | Best For | |-------|-------------|----------| | RBAC | Role-based - users assigned to roles with permissions | Most applications | | ABAC | Attribute-based - policies evaluate user/resource attributes | Complex rules | | MAC | Mandatory - system-enforced classification levels | Government/military | | DAC | Discretionary - resource owners control access | File systems | | ReBAC | Relationship-based - access via entity…