Spot instances allow making use of unused AWS capacity at steep discounts, with the caveat that they may be terminated at short (two minute) notice if the Spot price rises above your configured upper bound or no capacity is available.
Each instance type is assigned a separate Spot price in addition to its ordinary On-Demand price which is adjusted in response to the supply of and demand for Spot Instances.
- Spot Instance
- Spot Fleet
- Spot Request