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Failover operations are designed primarily to maintain system availability, which is essential for ensuring that services remain uninterrupted in the event of a failure. The purpose of failover is to automatically switch to a redundant or standby system when the primary system encounters an issue, thereby minimizing downtime and maintaining accessibility for users. This characteristic is critical for mission-critical applications where any downtime could lead to significant disruptions or financial loss.

While some failover configurations can indeed be manual, the more robust implementations are typically automated to optimize response times during incidents. Additionally, failover systems are not exclusive to large enterprises; they can be effectively utilized by organizations of any size that require high availability. Regarding costs, while implementing failover solutions may involve initial investments, the focus on availability often justifies these costs, emphasizing how crucial they are, especially for businesses that cannot afford outages.