The InterAppCommunicator API enables sending events from one web application to another web application running within the Pega Client for Windows. It also enables broadcasting the event to all web applications running within the client. The events, including broadcast events, are not delivered to the sender application.

In order for the recipient web application to be able to receive events from other applications, it has to be started and registered using the addListener method. However, since the receiving web application may be removed before it is able to receive and process the event or may not be registered for event receipt, it can not be guaranteed that the event will be delivered. Also, events that have not been delivered will not be persisted.