A company has a predictable baseline of EC2 usage and highly variable spike usage. They want to maximize cost savings without risking capacity shortages during spikes. Which purchasing strategy should the architect recommend?

Answer options:

Purchase Standard Reserved Instances for all expected usage.

Use Spot Instances for the baseline and On-Demand for spikes.

Purchase Compute Savings Plans for the baseline usage. Use On-Demand instances for the variable spikes.

Use Dedicated Hosts for all usage.

How to approach this question

Match predictable usage to commitments and variable usage to flexible pricing.

Full Answer

C.Purchase Compute Savings Plans for the baseline usage. Use On-Demand instances for the variable spikes.✓ Correct

Purchase Compute Savings Plans for the baseline usage. Use On-Demand instances for the variable spikes.

Compute Savings Plans offer the most flexible discount for baseline compute usage. On-Demand is appropriate for unpredictable spikes where commitment would lead to waste.

Common mistakes

Using Spot for baseline, which violates the requirement to avoid capacity shortages.

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Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 6

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