22. The system of claim 21 wherein the service event generator extracts a service measure from the transaction trace data, determines whether there is an anomaly with the service measure, and generates an incoming event record for the service measure in response to a determination of an anomaly in the service measure.
21. The system of claim 20 further comprises a service event generator configured to receive transaction trace data that identifies a transaction being executed the distributed computing environment, determines a sequence of service calls from the transaction trace data, and updates a topology model using the sequence of service calls, wherein the transaction trace data is generated by a transaction agent instrumented in a process executing in the distributed computing environment and the topology model defines relationships between entities in the distributed computing environment.