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Question 952 of 1,040

Design Cost-Optimized Architectures →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is to use a lifecycle policy that transitions objects older than 30 days to S3 Standard-IA, keeping them there until day 180. This is correct because S3 Standard-IA offers significantly lower storage costs than S3 Standard while still providing the low-latency retrieval needed for monthly access, and the 30-day minimum storage charge for Standard-IA is satisfied by the transition threshold. On the SAA-C03 exam, this scenario tests your understanding of cost-optimized lifecycle rules combined with immutability—a common trap is assuming you must delete or move to Glacier, but the key is matching access patterns to the right storage class. Remember that S3 Object Lock (immutability) is preserved across lifecycle transitions, so you can reduce cost without breaking compliance. Memory tip: “30 days to IA, 180 days to stay—monthly reviews pay less that way.”

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. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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.

Question 1mediummultiple choice

Full question →

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.

Full breakdown with real-world context →

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 older than 30 days to S3 Standard-IA, which offers lower storage costs than S3 Standard while still providing low-latency access for monthly reviews. The lifecycle policy keeps the objects in S3 Standard-IA until day 180, meeting the 180-day retention requirement without incurring the higher cost of S3 Standard for the entire period. S3 Standard-IA has a minimum storage duration of 30 days, which is satisfied by the 30-day transition threshold, and the objects remain immutable as S3 Object Lock is not affected by lifecycle transitions.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

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
Read the scenario before looking for a memorised answer.
✗
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 cost for all access patterns, but for logs accessed only once per month, S3 Standard-IA is more cost-effective because Intelligent-Tiering incurs monitoring and automation overhead and may not move objects to the cheapest tier quickly enough for this specific use case.

Detailed technical explanation

How to think about this question

S3 Standard-IA charges a lower storage rate than S3 Standard but adds a retrieval fee and a 30-day minimum storage duration charge for objects deleted or transitioned before 30 days. Lifecycle policies evaluate object age based on the last modified date, and transitioning at 30 days ensures the minimum storage duration is met. S3 Object Lock, if enabled, enforces immutability independently of lifecycle transitions, so moving objects to Standard-IA does not affect compliance with write-once-read-many (WORM) requirements.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

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

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

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.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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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 — Read the scenario before looking for a memorised answer..

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 older than 30 days to S3 Standard-IA, which offers lower storage costs than S3 Standard while still providing low-latency access for monthly reviews. The lifecycle policy keeps the objects in S3 Standard-IA until day 180, meeting the 180-day retention requirement without incurring the higher cost of S3 Standard for the entire period. S3 Standard-IA has a minimum storage duration of 30 days, which is satisfied by the 30-day transition threshold, and the objects remain immutable as S3 Object Lock is not affected by lifecycle transitions.

What should I do if I get this SAA-C03 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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?

Read the scenario before looking for a memorised answer.

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Same concept, more angles

1 more ways this is tested on SAA-C03

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. 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?

medium

✓ A.Use a lifecycle policy to transition objects older than 30 days to S3 Standard-IA, and keep them there until day 180.
B.Use a lifecycle policy to transition objects older than 30 days to S3 Glacier Deep Archive and delete after 30 days.
C.Use a lifecycle policy to transition objects older than 30 days to S3 Intelligent-Tiering with no minimum storage duration.
D.Disable lifecycle management and instead lower costs by deleting objects immediately after they are written.

Why A: 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.

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This SAA-C03 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAA-C03 exam.