How to Migrate a Cloud Application That Depends on a Vendor SFTP Server

An application may exchange files with a vendor through SFTP using fixed source IPs, host keys, folders, and scheduled jobs. Moving the workload can break the transfer even when application pages and databases work.

What to check

Inventory endpoints, host key fingerprints, credentials, source IP allowlists, file naming and timing rules, encryption, and acknowledgement behavior. Check inbound and outbound jobs and identify who monitors failed transfers.

Recommended next step

Coordinate new network identities and host key verification with the vendor before cutover. Run controlled test transfers, reconcile file counts, and prevent the old and new jobs from processing the same files.

How Informatix Systems can help

Informatix Systems provides cloud migration and integration services. We can assess the affected setup, trace dependencies, and help plan a practical improvement. Contact us with the platform involved, when the issue began, and non-sensitive error details.