Data Transfer Service across clouds
Managed bulk copy into cloud storage - DataSync, Storage Transfer Service, Azure Storage Mover - from a file share or another bucket, with what happens to deleted files decided in advance.
3 verified modules - all static-validated and publish-checked; live-test pending.
Compare by provider
| Provider | Module | Verification |
|---|---|---|
| AWS | A Transfer that Does Not Delete What It Finds | static-validated |
| Azure | An NFS Share Copied into Blob Storage by an Agent You Run, Deletes Accepted by Name | static-validated |
| Google Cloud | A Transfer that Copies without Deleting and Says When It Fails | static-validated |
How to choose
Compare where the copy runs from (an agent you install next to the source on AWS and Azure; GCP copies bucket to bucket without one), what it does about files the source no longer has, whether the transfer is verified after the write, and whether it can be throttled so the office link survives the migration.
When not to use
A transfer service moves bytes, not permissions. Ownership, ACLs and timestamps arrive as the service chooses to translate them, and a mirror mode that deletes at the destination is a one-line setting on every one of these.