AWS DataSync provides a fully managed, secure, and high-performance service for transferring large amounts of data between on-premises storage and Amazon S3. It uses TLS encryption in transit and automates data validation, scheduling, and monitoring.
From AWS Documentation:
“AWS DataSync securely and efficiently transfers large amounts of data online between on-premises storage and AWS services. All data is encrypted in transit using TLS.”
(Source: AWS DataSync User Guide – How DataSync Works)
Why B is correct:
Encrypts all data in transit automatically.
Optimized for high-throughput WAN environments (100 Mbps to multi-Gbps).
Fully managed, with no need to provision additional infrastructure.
Integrates natively with S3 and supports incremental syncs.
Why others are incorrect:
A: DMS is designed for database migration, not unstructured data.
C: Snowball is for offline migrations, not needed given available connectivity.
D: Direct Connect is costly for temporary data transfers and unnecessary here.
[References:, AWS DataSync User Guide – “Security in AWS DataSync”, AWS Well-Architected Framework – Cost Optimization and Operational Excellence Pillars, , , ]
