A TestEvent organizes the execution of TestCases for Tosca Distributed Execution. It contains two tpyes of objects.
1. ExecutionLists, i.e. lists of TestCases ready to be run. One TestEvent can contains several ExecutionLists.
2. Configurations for these ExecutionLissts, i.e. a collection of parameters that define which Tosca Distribution Agents should execute the TestCases.
Once you click Execute Now, Tricentis Tosca transfers your TestEvent to the TOSCA Distribution Server. The server then assign the executionLists to Tosca Distribution Agents whose configuration matches the one assigned to the TestEvent.