Failover

Failover is a process used in computing and networking to maintain continuous operation when a primary system, server, or service fails unexpectedly. It automatically switches to a backup system that is ready to take over seamlessly, ensuring minimal downtime and preserving data integrity. Think of it like a backup plan: if the main route is blocked, traffic is rerouted through an alternate route without realizing there was an issue. Failover is essential for maintaining reliability and high availability in systems that require constant operation.