Managing every framework as an isolated checklist creates unnecessary duplication.
A unified control library introduces an internal control model that can be connected to requirements from multiple external frameworks and internal policies.
The organization implements and manages the control once while maintaining mappings to the requirements it supports.
This does not remove differences between frameworks. Each framework retains its own structure and requirements. The unified control acts as the operational implementation layer connecting those requirements to ownership, evidence, assessments, systems, risks, and remediation activities.
The result is a governance model focused on operating security controls rather than repeatedly answering similar questions for each framework.
A well-designed control library should therefore remain separate from framework requirements while maintaining clear, reviewable mappings between them.