Access to the productive web service with a fixed IP address
The productive service must be activated for the IP address via which the client accesses the service. Get in touch with your contact at GET AG and tell them the IP address or IP range from which you want to access the service in order to be authorised for this service. You will then receive your authentication information for the service.If you use serverless data transfer / serverless computing (e.g. AWS or Azure), please follow these instructions.
This guide is also helpful if you have to hide many servers behind an IP via NAT.
https://matthewleak.medium.com/aws-lambda-functions-with-a-static-ip-89a3ada0b471
https://matthewleak.medium.com/azure-functions-with-a-static-ip-145b3863c2c2