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Spot instances allow you to take advantage of unused EC2 capacity. Spot instances can be discounted up to 90% compared to on-demand pricing
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Spot instances should be used for stateless, fault tolerant, or flexible applicaitons or anywhere you don't need persistent storage
- Big Data
- Containarized workloads
- HPC
- Test/Dev workloads
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Spot blocks can be used to block Spot instances from being terminated
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Spot fleet is a collection of Spot instances and (optionally) On-Demand instances