Field teams worldwide upload large files to a single S3 bucket in us-east-1 — uploads from Asia are painfully slow over the internet. Which feature speeds up these uploads?
A.S3 Transfer Acceleration — uploads via CloudFront edge locations
Edge ingestion + backbone routing. Correct.
B.Multipart upload alone
Multipart parallelizes parts but doesn't shorten the network path.
C.S3 Versioning
Versioning is data protection — unrelated to speed.
D.A second bucket in another region
A second bucket changes the destination, not the path speed.
Why this answer
Transfer Acceleration routes uploads through CloudFront edge locations → AWS backbone → the bucket — typically 50–500% faster for long-distance uploads. Multipart helps large-file reliability/parallelism but still travels the public path.
Correct answer: A · Last reviewed 2026-11-02
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