Currently in the process of setting up an integration in IFS Cloud 24r2

Requirements:

1. An External System will generate a CSV file containing the shop order number and place the file into a shared folder (external network)
2. IFS should pick the CSV file up use the shop order no (contained in the file) to retrieve the relevant picklist
3. The picklist information will be returned to the shared drive in required format
4. The External System will retrieve the picklist information and use it to carry out picking, once completed the system will create a new CSV file confirming the completed picks
5. IFS will then pick up this file and used the data to confirm picks in IFS.

As the folder is on an external network the vendor of External System has advised that we will need to set up a Gateway to be able to access the shared folder on the external network.

Am I correct in assuming that this will require setting up a VPN Gateway in Azure using the External Server network path e.g. \\ExternalServer\Shared along with credentials?

Is there a better way to do this?

Thank you for your time.