With pub/sub you have a lean possibility to have
a 1:n communication.
The communication via this way can be faster than
the client/server communication.
Licensing: For pub/sub communication you need the
OPC UA license. c5x0: 150 application credit c430: 100 application credit (This is the same license as for more than one OPC UA
client / server communication.)
Detailed information can be found in the enclosed documentation - in the chapter "OPC UA PubSub".