Which strategy ensures an organization can maintain performance during unexpected demand spikes?

The strategy that ensures an organization can maintain performance during unexpected demand spikes is cloud bursting. This approach involves leveraging a cloud computing environment to temporarily handle increased workloads that exceed the capacity of the organization's primary infrastructure.

When demand surges unexpectedly, cloud bursting allows organizations to seamlessly scale their services by utilizing additional resources from a cloud provider. This enables them to maintain optimal performance levels without needing to permanently invest in extra hardware that may remain underutilized during normal operating periods.

In contrast, disaster recovery planning focuses on restoring systems after a catastrophic event rather than handling immediate demand spikes. Data redundancy is about creating copies of data to prevent loss, which does not directly address performance under load. Load testing, while crucial for determining how systems handle expected workloads, does not provide a mechanism for scaling in response to sudden increases in demand. Hence, cloud bursting stands out as the most effective strategy for maintaining performance during unexpected demand spikes.