The correct answer is to use Standard for 30 days, transition to Standard-IA for 90 days, then to Glacier Deep Archive. This S3 lifecycle policy for long retention cost optimization works because it precisely matches the storage class cost structure to the data’s changing access patterns: Standard handles the initial high-frequency period, Standard-IA reduces costs during the infrequent access window, and Glacier Deep Archive provides the absolute lowest storage cost for the remaining seven years of compliance retention. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your ability to map access timelines to the correct transition actions, with a common trap being to choose Glacier Flexible Retrieval instead of Deep Archive, which is more expensive for data that is rarely accessed. Remember the memory tip: “30-90-7” — 30 days Standard, 90 days IA, 7 years Deep Archive.
SOA-C02 Cost and Performance Optimization Practice Question
This SOA-C02 practice question tests your understanding of cost and performance optimization. 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 is using Amazon S3 to store historical data. The data is accessed frequently for the first 30 days, then accessed infrequently for the next 90 days, and after 120 days it is rarely accessed but must be retained for 7 years for compliance. Which S3 lifecycle policy provides the LOWEST cost while meeting these requirements?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Standard for 30 days, then transition to Standard-IA for 90 days, then to Glacier Deep Archive.
Option A is correct because it aligns the storage class transitions precisely with the access patterns: Standard for frequent access (first 30 days), Standard-IA for infrequent access (next 90 days), and Glacier Deep Archive for long-term retention (after 120 days). This minimizes cost by avoiding paying for premium storage when data is rarely accessed, while still meeting the 7-year compliance requirement at the lowest possible storage cost.
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.
✓
Standard for 30 days, then transition to Standard-IA for 90 days, then to Glacier Deep Archive.
Why this is correct
Optimizes cost by using appropriate storage classes for each access pattern.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Standard for 30 days, then transition to One Zone-IA for 90 days, then to Glacier Deep Archive.
Why it's wrong here
One Zone-IA is not durable for compliance data.
✗
Standard for 120 days, then transition to Glacier Deep Archive.
Why it's wrong here
Misses cost savings from Standard-IA for infrequent access period.
✗
Standard for 30 days, then transition to Glacier for the remaining life.
Why it's wrong here
Glacier is more expensive than Glacier Deep Archive for rarely accessed data.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often overlook the compliance durability requirement and choose One Zone-IA for cost savings, or they fail to optimize the infrequent access period and keep data in Standard too long, both of which increase cost or risk data loss.
Detailed technical explanation
How to think about this question
S3 Lifecycle policies evaluate transitions based on object age, and each transition incurs a per-object cost (e.g., $0.01 per 1,000 transitions for Standard-IA). Glacier Deep Archive has the lowest storage cost ($0.00099/GB/month) but the highest retrieval costs and longest retrieval times (12–48 hours), making it ideal for compliance data that is almost never accessed. The key is to match the storage class to the access pattern: Standard for frequent access, Standard-IA for infrequent but immediate retrieval needs, and Glacier Deep Archive for archival with minimal retrieval frequency.
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.
Cost and Performance Optimization — This question tests Cost and Performance Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Standard for 30 days, then transition to Standard-IA for 90 days, then to Glacier Deep Archive. — Option A is correct because it aligns the storage class transitions precisely with the access patterns: Standard for frequent access (first 30 days), Standard-IA for infrequent access (next 90 days), and Glacier Deep Archive for long-term retention (after 120 days). This minimizes cost by avoiding paying for premium storage when data is rarely accessed, while still meeting the 7-year compliance requirement at the lowest possible storage cost.
What should I do if I get this SOA-C02 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: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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 SysOps administrator wants to reduce the cost of storing infrequently accessed data in Amazon S3. The data must be retained for 10 years for compliance. Which TWO actions should the administrator take? (Choose TWO.)
easy
✓ A.Use S3 Glacier Deep Archive as the destination for the lifecycle transition.
B.Store the data in S3 Standard.
C.Enable S3 Versioning to protect against accidental deletion.
✓ D.Configure an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive after 30 days.
E.Use S3 Intelligent-Tiering to automatically optimize costs.
Why A: Correct options: B and D. Option B is correct because S3 Lifecycle policies can transition objects to lower-cost storage classes over time. Option D is correct because S3 Glacier Deep Archive is the cheapest storage class for long-term archival. Option A is wrong because S3 Standard is expensive for infrequent access. Option C is wrong because S3 Intelligent-Tiering has a monitoring cost and is best for unknown access patterns. Option E is wrong because enabling versioning increases storage costs due to multiple versions.
Variation 2. A company is using Amazon S3 to store data for analytics. The data is accessed frequently for the first 30 days, then rarely after that. The company wants to optimize storage costs. Which THREE actions should the SysOps administrator recommend?
medium
✓ A.Use S3 Intelligent-Tiering to automatically optimize storage costs.
B.Use S3 One Zone-IA for all data after 30 days to reduce costs.
✓ C.Create a lifecycle policy to transition objects to S3 Glacier Deep Archive after 90 days.
✓ D.Create a lifecycle policy to transition objects to S3 Standard-IA after 30 days.
E.Use S3 Standard storage for all data to ensure high performance.
Why A: Option B is correct because S3 Intelligent-Tiering automatically moves data between tiers. Option C is correct because lifecycle policies can transition objects to colder storage. Option E is correct because S3 Glacier Deep Archive is the cheapest for long-term archival. Option A is wrong because S3 Standard is more expensive than Standard-IA for infrequent access. Option D is wrong because S3 One Zone-IA is for infrequent access but does not provide high availability.
Variation 3. A company stores 1 PB of data in Amazon S3 Standard. The data is accessed frequently for the first 30 days, then rarely accessed afterwards. The company needs to optimize storage costs. What should they do?
medium
A.Move all objects to S3 Intelligent-Tiering immediately.
B.Delete objects older than 30 days using S3 Lifecycle expiration.
C.Manually change the storage class of each object to S3 Glacier Deep Archive after 30 days.
✓ D.Configure an S3 Lifecycle policy to transition objects to S3 Standard-IA after 30 days, then to S3 Glacier Deep Archive after 90 days.
Why D: Option D is correct because an S3 Lifecycle policy automatically transitions objects to colder storage classes based on age. Option A is wrong because deleting data loses it. Option B is wrong because S3 Intelligent-Tiering has a monitoring cost per object. Option C is wrong because manual transitions are not scalable.
Variation 4. A company stores large volumes of log data in Amazon S3. The logs are accessed frequently for the first 30 days, then occasionally for the next 60 days, and after 90 days they are rarely accessed but must be retained for 7 years for compliance. The SysOps administrator wants to minimize storage costs while ensuring data is available when needed. Which S3 lifecycle policy configuration should be applied?
easy
A.Transition objects to S3 Standard-IA after 30 days, and to S3 Glacier after 60 days. Delete after 7 years.
B.Transition objects to S3 Glacier Deep Archive after 30 days, and delete after 7 years.
C.Transition objects to S3 One Zone-IA after 30 days, and to S3 Glacier Deep Archive after 90 days. Delete after 7 years.
✓ D.Transition objects to S3 Standard-IA after 30 days, and to S3 Glacier Deep Archive after 90 days. Delete after 7 years.
Why D: Option D is correct because it aligns the lifecycle transitions with the access patterns: frequent access for the first 30 days (S3 Standard), occasional access for the next 60 days (S3 Standard-IA), and rare access after 90 days (S3 Glacier Deep Archive, the lowest-cost storage class for long-term retention). The deletion after 7 years meets compliance requirements while minimizing costs by using progressively cheaper storage classes.
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