A corporation's IT department is in the process of implementing a new security framework. This framework is designed to dynamically permit, ascertain, and manage access to various digital resources, ensuring compliance with the organization's established policies on who can access what, when, and under what conditions. Considering the need for a system that integrates these considerations seamlessly into the access control mechanism, which principle should the department prioritize for incorporation?

Policy$-$driven access control

Authorization models

Authentication, authorization, and accounting

Zero trust model