Use case: Users would like to retrieve the history of what happened in Marathon, i.e. when an instance was launched, or failed, or killed, so that they can better understand in which state their services are.
- Users (e.g. the UI) should be able to retrieve historical information about instances so that they don't need to query Mesos state
TBD – This does not require that Marathon serves this information; there might be a service adjacent to Marathon that collects historical data and provides it on request.