Which Well-Architected concept describes a system’s ability to remain functional when it encounters operational issues?

Durability refers to a system's ability to recover from infrastructure or service disruptions and continue functioning. It ensures data integrity and availability even in the face of failures. Consistency relates to data being uniform across multiple systems, which is important for data integrity but not directly about operational resilience. Elasticity is the ability to scale resources up or down automatically based on demand, focusing on performance and cost optimization rather than fault tolerance. Latency is the delay before a transfer of data begins following an instruction for its transfer, a measure of performance, not resilience.