Today cloud/grid are hot domains.
Does any body have idea how events are processed in cloud environment?
Or is there any standard for event exchange in cloud?
There are several start-ups whose claim to fame is processing events in clouds. In general, the type of processing is not different; the implication is on -- event producers/consumers in the cloud, and also the event processing itself can be done in the cloud, you can look them up. There is an experience of doing distributed event processing over a grid over the years, in the chapter that describes implementation issues, we have some discussion about distributed event processing in general.