Listeners are background processes in the Pega Platform that wait for inbound network requests or messages. In a high availability environment, listeners should be distributed across hosts and Pega Platform servers by using node types to assure redundancy.
The listeners available in the Pega Platform are:
- Java Message Service (JMS)
- Message Queue for IBM Websphere (MQ)
- JMS Message Driven Bean for JEE (e-tier) deployments (JMS MDB)