- Spare capacity sold at lowest possible price
- Instances may get terminated if capacity is needed by other customers paying market price
- Instances will receive a 2-minute warning signal so it can wrap up tasks
- Good for tasks that are
- Stateless, every instance runs and stops independently
- Flexible, supports scaling up and down
- Fault-tolerant, can handle interruptions gracefully
- Loosely coupled, tasks are not dependent or follows certain order
- Use cases
- Big data
- CI / CD
- HPC
