In cybersecurity, lead time refers to the duration between the initiation of a process - such as identifying a potential threat or vulnerability - and its completion, like deploying a security patch or mitigation. Lead time is a crucial metric for measuring an organization's responsiveness and efficiency in addressing security incidents. Shorter lead times mean faster detection and resolution, reducing the window of exposure and potential impact of threats. Organizations often track and strive to minimize lead time to improve their overall cybersecurity posture and resilience against attacks.