How to forward an internal address on a network to an external one?

Question

Computer networks

Goodnight. Please tell me, I’ve been fighting for more than one hour, there is a local network with the server’s ip address, let’s say 172.20.7.3, this server is moving to the cloud, and so that users don’t change the label, I want to auto-substitute the internal address with the external one on Mikrotik, with the same or other port.