You would not install it on Talend Cloud. Talend Cloud comes with the ability to run remote engines anywhere you like. These remote engines communicate with Talend Cloud. This means that you can sit the remote engines behind firewalls and as long as they can communicate out to Talend Cloud, they can do their job. The communication does not need to be two way. The remote engines are used to run jobs in different locations (on premises, AWS, Azure, etc, etc). Given your requirement, you would set up your remote engine in a location with access to your Active MQ.
Alternatively, you could set your ActiveMQ up in a public location that Talend Cloud has access to.
