Inventory the dependencies
Compare the selected architecture, resource allocation, traffic allowance, IP cost, backup policy and support scope. Do not assume a privacy-focused option will be the lowest price. Review current identity requirements directly rather than relying on an old comparison.
Plan the image move
A provider-specific snapshot may not boot elsewhere without adjustments. An application-level export or a clean rebuild with restored data is often easier to audit than copying an entire running system.
Rebuild before switching
Take a consistent export, encrypt the backup and create the destination from a supported image. Restore application data, configure secrets privately and test the service under a temporary hostname. Verify jobs, mail, uploads and external integrations as well as the homepage.
Cut over with a way back
Lower DNS TTL in advance where useful, plan a final data synchronisation and switch only after validation. Keep the previous service available for an agreed rollback window, then remove billable resources and credentials after independent backups are confirmed. No fixed one-hour migration promise is made.