☁️ Free practice test question from: KCNA (KCNA)

Spot instances (in AWS terminology, similar concepts exist in other clouds with different names) allow you to bid for unused cloud provider capacity at steep discounts, often 70-90% cheaper than on-demand pricing. They're ideal for:

• Batch processing jobs that can be interrupted

• CI/CD pipelines where failed builds can be retried

• Data processing and analysis workloads

• Testing environments

The key trade-off is that spot instances can be reclaimed by the cloud provider with minimal notice (typically 2 minutes) when they need the capacity back. This is why they work best for workloads that can handle interruptions and restarts.