SAA-C03 Design Cost-Optimized Architectures Practice Question
This SAA-C03 practice question tests your understanding of design cost-optimized architectures. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: s3 Lifecycle policies automate object transitions between storage classes.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A marketing site stores logs in S3. Logs are queried for 30 days, rarely accessed for one year, and then retained for compliance. What should reduce storage cost? The design must avoid adding custom operational scripts.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
S3 lifecycle policy that transitions objects to lower-cost storage classes over time
Option A is correct because S3 Lifecycle policies allow you to automatically transition objects from S3 Standard to lower-cost storage classes like S3 Standard-IA (Infrequent Access) after 30 days, then to S3 Glacier Deep Archive after one year, without custom scripts. This matches the access pattern: frequent queries for 30 days, rare access for a year, then long-term retention for compliance. The policy automates cost reduction by moving data to progressively cheaper storage as access frequency decreases.
For each option: why learners choose it and why it is or isn't the right answer here.
✓
S3 lifecycle policy that transitions objects to lower-cost storage classes over time
Why this is correct
Lifecycle rules automate transitions based on age, matching storage cost to access patterns.
Related concept
S3 Lifecycle policies automate object transitions between storage classes.
✗
Keep all logs in S3 Standard indefinitely
Why it's wrong here
S3 Standard is more expensive for rarely accessed archival data.
✗
Use EBS snapshots for the logs
Why it's wrong here
EBS snapshots are not the right storage model for application log objects.
✗
Move all logs immediately to S3 Glacier Deep Archive
Why it's wrong here
Immediate deep archive can make recent query access slow and expensive.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates might choose Option D, thinking immediate archiving is cheapest, but they overlook the 30-day query requirement and the fact that S3 Glacier Deep Archive has retrieval times of 12+ hours, making it unsuitable for frequent access.
Detailed technical explanation
How to think about this question
S3 Lifecycle policies use transition actions that can be time-based (e.g., after 30 days) to move objects between storage classes, leveraging the S3 API's `Transition` element. The policy can also include expiration actions to delete objects after a specified period. For compliance, S3 Object Lock can be combined with lifecycle policies to prevent deletion or modification during the retention period, ensuring immutability without scripts. A real-world scenario is a financial services firm that must retain audit logs for 7 years; lifecycle policies automate tiering from S3 Standard (30 days) to S3 Glacier Deep Archive (after 1 year) and delete after 7 years, reducing costs by up to 90%.
KKey Concepts to Remember
S3 Lifecycle policies automate object transitions between storage classes.
Policies can be based on object age or prefix.
Transitions to lower-cost tiers like S3 Standard-IA, Glacier Flexible Retrieval, or Glacier Deep Archive.
Lifecycle policies also support object expiration.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
S3 Lifecycle policies automate object transitions between storage classes.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Review s3 Lifecycle policies automate object transitions between storage classes., then practise related SAA-C03 questions on the same topic to reinforce the concept.
Design Cost-Optimized Architectures — This question tests Design Cost-Optimized Architectures — S3 Lifecycle policies automate object transitions between storage classes..
What is the correct answer to this question?
The correct answer is: S3 lifecycle policy that transitions objects to lower-cost storage classes over time — Option A is correct because S3 Lifecycle policies allow you to automatically transition objects from S3 Standard to lower-cost storage classes like S3 Standard-IA (Infrequent Access) after 30 days, then to S3 Glacier Deep Archive after one year, without custom scripts. This matches the access pattern: frequent queries for 30 days, rare access for a year, then long-term retention for compliance. The policy automates cost reduction by moving data to progressively cheaper storage as access frequency decreases.
What should I do if I get this SAA-C03 question wrong?
Review s3 Lifecycle policies automate object transitions between storage classes., then practise related SAA-C03 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
S3 Lifecycle policies automate object transitions between storage classes.
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