Cloud Software Program has published two reports on Cloud Business models. The first (is a report on definition of cloud software business, on transition from software project business and license business, and on value propositions and risks of cloud software business. The second is an intermediate report on industry-specific cases of value chains in cloud software business, their composition and description how value is generated for the customers and providers.
The reports (“First taste of cloud software business” and “Intermediate report on industry-specific cases”) can be found here
https://www.cloudsoftwareprogram.org/results