Theoretically there are:
- SERVER A
- SERVER B
Question: Is there a load-balancer solution (either by software or payed in the cloud) that can redirect the "clients" to "SERVER A" or "SERVER B" based on what network port did they connect to to the LB?
If software, probably there is a solution to have firewall rules on the LB, but I am mainly searching for a payed solution, ex.: AWS, GCP or Azure can do this kind of LBing to a SERVER which is not in their DCs?