Hello,
I am not allow to use Delta share.
What could be best approach to send Data from Databricks A to Databricks B. AS Shown in diagram.

what mechanism we can used to transfer the data. for example:- Do I need to open port or any other mechanism like RestAPI..... etc.
Shall I first transformed the data than send to B or shall I send the Raw Data from A to B and perform the transformation at B.
Which approach is more reliable in Production and why ?.
Thanks a lot for your help.