- A
Use a lifecycle policy to transition objects older than 30 days to S3 Standard-IA, and keep them there until day 180.
Logs accessed about monthly match Standard-IA economics and still provide fast retrieval.
- B
Use a lifecycle policy to transition objects older than 30 days to S3 Glacier Deep Archive and delete after 30 days.
Why wrong: Deep Archive is cheaper, but deletion after 30 days violates the 180-day retention requirement.
- C
Use a lifecycle policy to transition objects older than 30 days to S3 Intelligent-Tiering with no minimum storage duration.
Why wrong: Intelligent-Tiering can help, but removing a minimum duration is not necessary and adds complexity versus a clear monthly-access pattern.
- D
Disable lifecycle management and instead lower costs by deleting objects immediately after they are written.
Why wrong: Deleting immediately reduces cost but directly breaks the required 180-day retention and immutability needs.
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 Standard-IA is for infrequently accessed data requiring rapid access.. 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 company stores application logs in an S3 bucket. They retain logs for 180 days. Compliance requires that the logs be immutable once written, but the business only reviews logs about once per month. Currently, the team stores everything in S3 Standard, and their monthly S3 bill is too high. They want to reduce storage cost without changing the requirement to keep logs for 180 days.
Which lifecycle approach best meets the goal?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Use a lifecycle policy to transition objects older than 30 days to S3 Standard-IA, and keep them there until day 180.
Option A is correct because it transitions logs to S3 Standard-IA after 30 days, which reduces storage costs while still meeting the 180-day retention requirement. S3 Standard-IA is designed for data accessed less frequently but requires rapid access when needed, aligning with the monthly review pattern. The lifecycle policy keeps objects in S3 Standard-IA until day 180, ensuring immutability (via S3 Object Lock or bucket policies) and compliance without premature deletion.
Key principle: S3 Standard-IA is for infrequently accessed data requiring rapid access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use a lifecycle policy to transition objects older than 30 days to S3 Standard-IA, and keep them there until day 180.
Why this is correct
Logs accessed about monthly match Standard-IA economics and still provide fast retrieval.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
S3 Standard-IA is for infrequently accessed data requiring rapid access.
- ✗
Use a lifecycle policy to transition objects older than 30 days to S3 Glacier Deep Archive and delete after 30 days.
Why it's wrong here
Deep Archive is cheaper, but deletion after 30 days violates the 180-day retention requirement.
- ✗
Use a lifecycle policy to transition objects older than 30 days to S3 Intelligent-Tiering with no minimum storage duration.
Why it's wrong here
Intelligent-Tiering can help, but removing a minimum duration is not necessary and adds complexity versus a clear monthly-access pattern.
- ✗
Disable lifecycle management and instead lower costs by deleting objects immediately after they are written.
Why it's wrong here
Deleting immediately reduces cost but directly breaks the required 180-day retention and immutability needs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose S3 Intelligent-Tiering (Option C) thinking it automatically optimizes costs, but it does not guarantee savings for monthly access patterns and has a 30-day minimum duration per tier, making it less cost-effective than a direct transition to S3 Standard-IA.
Detailed technical explanation
How to think about this question
S3 Lifecycle policies use actions like 'Transition' to move objects between storage classes based on age, with S3 Standard-IA offering a lower per-GB storage cost than S3 Standard but with a retrieval fee. The 30-day minimum for S3 Standard-IA ensures objects are not prematurely transitioned, and S3 Object Lock (with retention modes like Governance or Compliance) can enforce immutability independently of lifecycle rules. In practice, combining lifecycle transitions with S3 Object Lock allows cost savings while meeting compliance requirements for write-once-read-many (WORM) data.
KKey Concepts to Remember
- S3 Standard-IA is for infrequently accessed data requiring rapid access.
- S3 lifecycle policies automate object transitions between storage classes.
- Standard-IA has lower storage costs than S3 Standard but charges for retrieval.
- Minimum storage duration for S3 Standard-IA is 30 days to avoid early deletion fees.
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 Standard-IA is for infrequently accessed data requiring rapid access.
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 Standard-IA is for infrequently accessed data requiring rapid access., then practise related SAA-C03 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this SAA-C03 question test?
Design Cost-Optimized Architectures — This question tests Design Cost-Optimized Architectures — S3 Standard-IA is for infrequently accessed data requiring rapid access..
What is the correct answer to this question?
The correct answer is: Use a lifecycle policy to transition objects older than 30 days to S3 Standard-IA, and keep them there until day 180. — Option A is correct because it transitions logs to S3 Standard-IA after 30 days, which reduces storage costs while still meeting the 180-day retention requirement. S3 Standard-IA is designed for data accessed less frequently but requires rapid access when needed, aligning with the monthly review pattern. The lifecycle policy keeps objects in S3 Standard-IA until day 180, ensuring immutability (via S3 Object Lock or bucket policies) and compliance without premature deletion.
What should I do if I get this SAA-C03 question wrong?
Review s3 Standard-IA is for infrequently accessed data requiring rapid access., then practise related SAA-C03 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
S3 Standard-IA is for infrequently accessed data requiring rapid access.
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Last reviewed: Jun 11, 2026
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