What does 'rollback' refer to in troubleshooting?

Rollback refers to the process of restoring a system to a previous state to resolve issues that may have arisen due to changes, such as updates or configuration changes. In troubleshooting, a rollback is a critical step when a recent change has triggered problems, allowing the system to revert to a known stable state. This action can restore functionality and eliminate the disruptions caused by new updates or changes, effectively mitigating the issues at hand.

The significance of this approach lies in its ability to limit downtime and restore service quickly without needing to explore more complex troubleshooting methods. By implementing a rollback, users can effectively manage and resolve errors that may have depleted system performance or caused failures in operations.