IBM BPM on Cloud is a subscription based offering that provides a complete IBM BPM service in the cloud. Compared to the traditional software license model (where you buy licenses, install the software somewhere, and administer it), BPM on Cloud is a more turnkey solution. IBM runs the environment, so you can focus on delivering BPM business processes.
Software-wise, BPM on Cloud is the same as BPM. You use the same tools, build the same artifacts, etc. Please refer to BPM Product Reference for information on IBM BPM.
Here are a few demos of the BPM on Cloud solution.
Below is the home page for BPM on Cloud. If you aren’t already using it, you can get a free trial!