CyberGuard dictionary / Core Cybersecurity
Availability
The ability of authorized users to access information or services when needed.
In simple terms
An important service should be there when people need it.
Technical explanation
Availability depends on resilience, monitoring, backups, capacity, and recovery planning.
Availability concerns timely usable access, not merely whether a server is powered on. Teams examine dependencies such as identity providers, networks, suppliers, and data stores, then test capacity and recovery paths.
Examples in practice
A retailer keeps a backup checkout system ready during an outage.
During a cloud outage, the retailer can accept orders through a documented alternate process and reconcile them when service returns. A restore test confirms that the backup system can actually process orders.
Why it matters
Even confidential and accurate data is less useful when nobody can reach it.
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Sources and further reading
Published 2026-10-15 · Last updated 2026-10-15 · CyberGuard editorial content. Source links provide context; they do not imply endorsement.