talking and listening to people here during OGF42, I perceived that there is a strong demand for a notification mechanism inside OCCI, that is able to carry an asynchronous notification about a relevant event. For instance, "this job is now running" from an hypothetical job resource, or "this VM is going to shut down in 5 seconds" from a Compute.

This demand is in fact more compelling than that about monitoring, and may be in fact integrated in OCCI-monitoring at a later time. So I'll give precedence to OCCI-Notification.