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SAA-C03 S3 Intelligent-Tiering Practice Question

A risk simulation workload generates analytics files that are accessed unpredictably. Some files become hot again months later. The team wants automatic storage cost optimisation without retrieval delays. What should be used? The design must avoid adding custom operational scripts.

⚠ Common exam trap

Many candidates choose S3 Glacier Flexible Retrieval because it is cheaper for cold data, but they overlook the 'no retrieval delays' requirement, as Glacier Flexible Retrieval has a retrieval time of minutes to hours, making it unsuitable for files that become hot again unpredictably.

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

S3 Intelligent-Tiering

S3 Intelligent-Tiering automatically moves objects between access tiers (frequent, infrequent, and archive instant access) based on changing access patterns, with no retrieval delays for hot objects and no operational overhead. This matches the unpredictable access pattern where files become hot again months later, as Intelligent-Tiering monitors access at the object level and adjusts storage class without manual intervention or custom scripts.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Manual monthly review and object copying

    Why it's wrong here

    Manual movement increases operational overhead and is error-prone.

  • S3 Glacier Flexible Retrieval for all files

    Why it's wrong here

    Glacier retrieval is not immediate and can add restore complexity.

  • S3 Intelligent-Tiering

    Why this is correct

    Intelligent-Tiering automatically moves objects between access tiers based on usage while preserving low-latency access.

  • EFS One Zone for analytics files

    Why it's wrong here

    EFS is a file system and not the best automatic tiering option for S3-style analytics objects.

Quick reference

AWS S3 Storage Class Comparison

Storage ClassMin DurationRetrievalUse Case
S3 StandardNoneImmediateFrequently accessed data
S3 Standard-IA30 daysImmediateInfrequent access, rapid retrieval
S3 One Zone-IA30 daysImmediateNon-critical infrequent data
S3 Intelligent-TieringNoneImmediate–hoursUnknown or changing access patterns
S3 Glacier Instant90 daysMillisecondsArchive with instant retrieval
S3 Glacier Flexible90 daysMinutes–hoursArchive, flexible retrieval
S3 Glacier Deep Archive180 daysHoursLong-term compliance archive

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Last reviewed: Jun 11, 2026

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