I am in the process of installing the Ubuntu Enterprise cloud using the Ubuntu server edition. I intend to use the cloud for developer services to see how feasible it is to make those services a real commodity.
For example, continuous integration is a service that is growing in use for software development and has on occasion peaks of very high load. Some of the load could be distributed to the cloud as a service, reducing the need for extra capacity internally (which would not be maximised) and turning that service into an operational cost rather than a capital cost.
Some useful links for configuring and using Ubuntu Enterprise cloud:
This work is licensed under a Creative Commons Attribution 4.0 ShareAlike License, including custom images & stylesheets. Permissions beyond the scope of this license may be available at @jr0cket