
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 composite mid-market manufacturer exited a colo of 150 workloads and ~400 TB in 21 months across 8 waves, with 47 minutes of unplanned cutover downtime (industry median per Gartner: ~4 hours per major cutover). The single-wave alternative bid came in at ~$4.8M; the wave-based program ran ~$2.1M. The post covers how the wave plan, dependency cutoff, and rollback layer fit together against a hard landlord deadline.
July 2026: EU Data Act switching charges hit zero by 12 Jan 2027; AWS free DTO-on-exit still requires Support approval and typically a 90-day move window. Exit cost is re-platform time (~$113k in our model), not the ~$4,400 egress line.
July 2026: Barclays ~86% plan some repatriation; IDC ~8 to 9% full exit, and both are true. Per-workload placement beats multi-cloud-by-default. Includes a scored matrix and the daily tax of “just in case” portability.
July 2026: nine migration mistakes that still show up after Migration Hub closed to new customers on November 7, 2025, covering AWS Transform MGN (formerly AWS Application Migration Service), DMS, AWS Transform, Org/SCPs, FinOps dual-run costs, and Migration Lens.
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