Hi @lexa_koszegi ,

Sorry, probably I didn't explain it clearly enough in previous message. In cross region scenarios serverless compute will use NAT Gateway. But this gateway is already created and managed by databricks. You don't have to do anything with it.

Just write some python code that will make a request to a site that can return public IP and run that code using serverless compute (ie there is this site called what's my IP that will return you public IP address). This way you will know public IP address. It should be stable IP address of databricks managed nat Gateway. Then just add that address to storage firewall (the one which is in the different region)