The identification of system and its components, whether physical or logical, that are considered critical to an organization’s mission. The reduced functional capability, incapacity, or destruction of such systems and components would have a significant adverse impact on an organization’s operations (including mission, functions, image, or reputation), assets, individuals, other organizations, and the Nation.
Source(s):
NIST SP 800-161
from
CNSSI 4009 - Adapted