In a continual improvement model, who maintains the ZT policies?

In a continual improvement model, policy administrators are the ones who maintain the ZT policies. Policy administrators are ZTA policy entities that are responsible for crafting and maintaining the policies that govern the access to resources in a ZT environment1. Policy administrators define the rules and conditions that specify who, what, when, where, and how an entity can access a resource, based on the principle of least privilege2. Policy administrators also update and review the policies periodically to ensure they are aligned with the changing business and security requirements3.

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Zero Trust Architecture | NIST

Zero Trust Architecture: Policy Engine and Policy Administrator

Zero Trust Architecture: Policy Administration