
DataSync vs Transfer Family vs Custom Scripts
Two jobs, checked 4 October 2026. DataSync copies a dataset. Transfer Family terminates SFTP, FTPS, FTP, and AS2 so a partner can drop a file in S3. A script is the short list that fits neither.
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Two jobs, checked 4 October 2026. DataSync copies a dataset. Transfer Family terminates SFTP, FTPS, FTP, and AS2 so a partner can drop a file in S3. A script is the short list that fits neither.
A lab design review still had a cron server for a nightly job. Classic Lambda had already stopped at 900 seconds. Name the primitive, or name the stop-rule that keeps the box.
A lab query still returned a customer the source deleted. Zero-ETL can land DynamoDB and listed SaaS sources in S3 Tables. A self-managed database cannot. Firehose database CDC was removed on 24 September 2025.
A lab table landed twice: Zero-ETL and DMS on the same rows. Self-managed databases replicate only to Redshift. Firehose Direct PUT into Iceberg is capped at 5 MiB/s in three regions, and database CDC was removed on 24 September 2025.
After the April 2026 S3 default that blocks SSE-C on new buckets (and on existing buckets in accounts with zero SSE-C objects), a SaaS media platform (~2.4 PB, 418 buckets) found 11 legacy upload paths still sending customer-key headers, all failing with 403 until migrated to SSE-KMS.
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