Real-time event auditing is the continuous collection and review of system and account activity as it happens, or with very little delay. In security tools, this usually means logging identity changes, file sharing actions, policy edits, admin actions, and other sensitive events, then surfacing them quickly for review.
It matters because many attacks succeed through small, fast changes: an attacker creates a new account, grants extra privileges, changes a sharing link, or disables a control before a routine audit would notice. Real-time auditing helps defenders spot those shifts sooner, reduce dwell time, and preserve evidence while the activity is still fresh. In practice, it appears in SIEM platforms, cloud admin consoles, and governance tools that alert on suspicious logins, permission changes, or unusual access patterns. It is most effective when logs are complete, time-synced, and monitored by someone who can act on the alert.