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The new EDN (event delivery network) is a simple, but important feature, which allows very easy development of event driven architectures. We get an event definition language to build events of special types. A mediator can publish events as routing rule or subscribe to events to initiate some logic. Best feature: the loose coupling through the events is tied together again in the runtime console, where you can see all events, the publishers and the consumers, even the flow traces show the call stacks of events. Great