One of the most common administration tasks with Payara Server, as well as with any web server, is to set up certificates to secure either HTTP protocol or remote access to Payara Server administration interface. You might have a self-signed certificate or a certificate signed by a trusted authority. In both cases it is pretty easy to add them to a Payara Server domain and use them to secure communication channels. 

Payara Server comes bundled with OpenMQ, which implements the Java Message Service (JMS) standard.

For simple messaging scenarios, it is convenient to use embedded OpenMQ broker, which is available by default. However, this embedded OpenMQ is running inside the JVM instance of Payara Server. This implies that whenever one of them needs to be restarted, the other one gets restarted too.