You are setting up a third-party integration only for the Production environment, which connects to an external RabbitMQ server.
Where do you put the configuration?
In the app/etc/env.php file
In the QUEUE_ConFIGURATION variable added in theproject Web UI or magento-cloud CLI
In the env:QUEUE_CONFIGURATION variable added in the project Web UI or magento Cloud CLI.
In the QUEUE_CONFIGURATION variable in the ,magento, env, yaml file