Augmentation of a control to build in additional, but related, functionality to the control; increase the strength of the control; or add assurance to the control.
Source(s):
NIST SP 800-37 Rev. 2
Augmentation of a security or privacy control to build in additional but related functionality to the control, increase the strength of the control, or add assurance to the control.
Source(s):
NIST SP 800-53 Rev. 5
NIST SP 800-53B