Threat intelligence is the process of collecting, analyzing, and applying information about cyber threats to help organizations identify, prevent, and respond to security incidents more effectively. It combines data from internal systems, open-source intelligence, commercial feeds, and industry-sharing communities to uncover indicators of compromise, emerging attack techniques, and adversary behavior. Effective threat intelligence programs deliver strategic, operational, tactical, and technical insights that support risk management and incident response. Integrating threat intelligence with security information and event management (SIEM), endpoint detection and response (EDR), and security operations center (SOC) workflows improves detection accuracy and reduces response times. Continuous analysis, collaboration, and context-driven prioritization enable organizations to stay ahead of evolving cyber threats and strengthen overall security resilience.