This AZ-204 practice question tests your understanding of develop for azure storage. 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.
Which TWO Azure Blob Storage access tiers are optimized for infrequently accessed data with a minimum storage duration of 30 days?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Transactional
Why wrong: Transactional is not an access tier.
Archive
Archive tier has a 180-day minimum but is for rarely accessed data.
Premium
Why wrong: Premium tier is for low-latency, not infrequent access.
Cool
Cool tier has a 30-day minimum and is for infrequent access.
Hot
Why wrong: Hot tier is for frequent access, no minimum duration.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Archive
The Cool tier is optimized for data that is infrequently accessed and stored for at least 30 days, offering lower storage costs than Hot but higher access costs. The Archive tier is optimized for rarely accessed data with a minimum storage duration of 180 days, but it also supports infrequent access patterns and is often considered for long-term retention. Both Cool and Archive tiers are designed for infrequently accessed data, with Cool having a 30-day minimum and Archive a 180-day minimum, making them the correct answers for the 30-day requirement.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Transactional
Why it's wrong here
Transactional is not an access tier.
Archive
Why this is correct
Archive tier has a 180-day minimum but is for rarely accessed data.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Premium
Why it's wrong here
Premium tier is for low-latency, not infrequent access.
Cool
Why this is correct
Cool tier has a 30-day minimum and is for infrequent access.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Hot
Why it's wrong here
Hot tier is for frequent access, no minimum duration.
Common exam traps
The trap here is that candidates often confuse the Archive tier's 180-day minimum with the 30-day minimum required by the question, or they incorrectly assume that Premium (which is for high-performance scenarios) is suitable for infrequently accessed data.
Detailed technical explanation
Azure Blob Storage access tiers (Hot, Cool, Archive) are applied at the blob level and affect billing: Cool has lower storage cost but higher read/write costs, and objects must remain for 30 days to avoid early deletion fees. Archive has the lowest storage cost but requires rehydration (which can take up to 15 hours) before reading, and has a 180-day minimum storage duration. The 30-day minimum for Cool is enforced via early deletion penalties, calculated as the remaining days of the 30-day period if the blob is deleted or moved to another tier.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Develop for Azure storage — This question tests Develop for Azure storage — Read the scenario before looking for a memorised answer..
The correct answer is: Archive — The Cool tier is optimized for data that is infrequently accessed and stored for at least 30 days, offering lower storage costs than Hot but higher access costs. The Archive tier is optimized for rarely accessed data with a minimum storage duration of 180 days, but it also supports infrequent access patterns and is often considered for long-term retention. Both Cool and Archive tiers are designed for infrequently accessed data, with Cool having a 30-day minimum and Archive a 180-day minimum, making them the correct answers for the 30-day requirement.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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