Time-limited access is a permission that is granted for a defined period and then expires automatically. Instead of becoming a standing privilege, the access window closes unless it is renewed through an approval or review process. This is a core control in identity governance, privileged access management, and just-in-time access systems.
It matters because many attacks succeed by abusing access that was never removed. Short-lived permissions reduce the chance that stolen credentials, forgotten accounts, or overbroad role assignments can be used later. Defenders use time-limited access for admin tasks, contractor onboarding, break-glass use, and sensitive SaaS or cloud operations. In real environments, the control is only effective when expiration is enforced by the system, logged clearly, and paired with revocation, so access does not linger after the work is done.