This SAA-C03 practice question tests your understanding of design high-performing architectures. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: multipart upload allows uploading a single object in parts.. 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 latency-sensitive mobile game backend uploads large files to S3 from users around the world. Which two features can improve upload performance? The design must avoid adding custom operational scripts.
S3 Object Lock
Why wrong: Object Lock enforces retention and does not speed uploads.
S3 multipart upload
Multipart upload parallelizes large object upload parts and improves reliability.
S3 Inventory
Why wrong: Inventory reports object metadata and does not accelerate transfers.
S3 Transfer Acceleration
Transfer Acceleration uses optimized edge paths into AWS for long-distance S3 transfers.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
S3 multipart upload
S3 multipart upload is correct because it allows large files to be uploaded in parallel parts, significantly reducing the impact of latency and packet loss over long distances. This feature is built into S3 and requires no custom scripts, making it ideal for a latency-sensitive mobile game backend.
Key principle: Multipart upload allows uploading a single object in parts.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
S3 Object Lock
Why it's wrong here
Object Lock enforces retention and does not speed uploads.
S3 multipart upload
Why this is correct
Multipart upload parallelizes large object upload parts and improves reliability.
Related concept
Multipart upload allows uploading a single object in parts.
S3 Inventory
Why it's wrong here
Inventory reports object metadata and does not accelerate transfers.
S3 Transfer Acceleration
Why this is correct
Transfer Acceleration uses optimized edge paths into AWS for long-distance S3 transfers.
Related concept
Multipart upload allows uploading a single object in parts.
Common exam traps
The trap here is that candidates may confuse S3 Transfer Acceleration with a feature that requires client-side modifications, but it is a simple bucket-level setting that uses AWS edge locations automatically, and they might overlook multipart upload as a performance booster because it is often associated with reliability rather than speed.
Detailed technical explanation
S3 multipart upload breaks a file into smaller parts (each up to 5 GiB, with a total object size limit of 5 TiB) that can be uploaded concurrently over multiple TCP connections, bypassing the serial bottleneck of a single upload. S3 Transfer Acceleration uses AWS edge locations and optimized network paths (via AWS Global Accelerator) to route uploads over the AWS backbone, reducing latency and packet loss for global users. Both features are natively supported by the S3 API, requiring no custom operational scripts.
Key takeaway
Multipart upload allows uploading a single object in parts.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Design High-Performing Architectures — This question tests Design High-Performing Architectures — Multipart upload allows uploading a single object in parts..
The correct answer is: S3 multipart upload — S3 multipart upload is correct because it allows large files to be uploaded in parallel parts, significantly reducing the impact of latency and packet loss over long distances. This feature is built into S3 and requires no custom scripts, making it ideal for a latency-sensitive mobile game backend.
Review multipart upload allows uploading a single object in parts., then practise related SAA-C03 questions on the same topic to reinforce the concept.
Multipart upload allows uploading a single object in parts.
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Last reviewed: Jun 11, 2026
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