CV0-004 Cloud Architecture and Design Practice Question
An organization is migrating to AWS and wants to optimize costs for a production database that runs 24/7. Which TWO pricing models would provide the most cost savings while ensuring the database is not interrupted? (Select TWO.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Reserved instances
Reserved Instances provide significant discounts for steady-state workloads like a production database that runs 24/7. Compute Savings Plans offer flexible, cost-effective pricing across instance families with a commitment to consistent usage. Both ensure uninterrupted operation because they guarantee capacity and are not subject to interruption. On-demand (B) is more expensive for long-term use, Spot instances (D) can be terminated without notice, and Dedicated hosts (A) are primarily for licensing or compliance requirements and are typically more costly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Dedicated hosts
Why it's wrong here
Dedicated hosts are more expensive and not needed unless for licensing.
- ✗
On-demand instances
Why it's wrong here
On-demand is the most expensive, no discount.
- ✓
Reserved instances
Why this is correct
Reserved instances offer up to 75% discount for 1- or 3-year terms, suitable for steady-state workloads.
- ✗
Spot instances
Why it's wrong here
Spot instances can be interrupted, not suitable for a production database.
- ✓
Compute Savings Plans
Why this is correct
Savings Plans offer flexibility and discounts similar to reserved instances.
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