Resilient systems refer to systems that can withstand and quickly recover from disruptions, such as natural disasters, cyber-attacks, or equipment failures. These systems are designed to be able to adapt to changing conditions and continue functioning even when faced with unexpected challenges. Resilient systems often incorporate redundancy, flexibility, and robustness in their design to ensure continuity of operations in the face of adversity. Research in this area focuses on developing strategies, tools, and technologies to enhance the resilience of critical infrastructure, networks, and organizations in order to minimize the impact of disruptions and enhance overall system performance and reliability.