The ability of an information system to continue to: (i) operate under adverse conditions or stress, even if in a degraded or debilated state, while maintaining essential operational capabilities…

Information System Resilience is the ability of an information system to withstand adverse conditions or stress, maintain essential operational capabilities even in a degraded state, and recover quickly to an effective operational posture to meet mission requirements. This definition perfectly matches the provided text, emphasizing both continued operation and recovery.

An Information System Owner is a role responsible for a system, not a characteristic of the system itself.

An Authorizing Official is a role responsible for granting authorization to operate systems, not a system capability.

Large Scale Integration refers to combining many components into a single system, which is unrelated to a system's ability to operate under stress and recover.