A company runs a steady, predictable baseline of Amazon EC2 compute that it expects to keep for the next three years, and it wants a lower rate than On-Demand by making a term commitment. Which TWO pricing models reward such a one-year or three-year commitment with a discount? (Select TWO.)
- AReserved Instances, which grant a lower rate in exchange for committing to a one-year or three-year term. Correct
- BOn-Demand Instances, which charge the standard rate by the second with no term commitment of any kind.
- CSavings Plans, which give a discount in return for committing to a steady amount of spend per hour for a term. Correct
- DSpot Instances, which sell spare capacity at a deep discount that AWS can reclaim at very short notice.
- EDedicated Hosts, which provide a whole physical server for one tenant to satisfy licensing or isolation rules.
Why A is correct: Reserved Instances trade a one-year or three-year term commitment for a discount, exactly matching the steady baseline described.
Why B is wrong: On-Demand is tempting for its flexibility but offers no commitment discount, so it costs more for a steady predictable baseline.
Why C is correct: Savings Plans reward an hourly spend commitment over a one-year or three-year term, fitting the predictable baseline at a lower rate.
Why D is wrong: Spot relies on interruptible spare capacity rather than a term commitment, so it does not suit an always-on baseline workload.
Why E is wrong: Dedicated Hosts address physical isolation and licensing, not a term-commitment discount on steady baseline compute.