One of the main motivations for commercializing was that we were starting to have a lot of contact with businesses who were using Eucalyptus or wanted to use Eucalyptus and wanted us to help them. From a public university perspective, that's just not feasible. There's conflict of interest, intellectual property ... it just can't work that way. That part of the community, the business community, the folks who have data centers, that's increased since we've commercialized. I think we look less frightening to them in terms of all of those issues.

At the same time, on the open source side of things where you've got everybody from hobbyists to journalists who are kind of figuring out the technology, that's also increased its scope as well, particularly internationally. So I think it isn't really that we've switched from one to the other, but I would say the business community, since we've commercialized, has been much more ready to contact us and willing to contact us. I think they are less concerned about, and legitimately so, dealing with a university project.

What is the difference between Eucalyptus and Eucalyptus Enterprise Edition?

VMware's virtualization technologies work differently than the open source virtualization technologies that Eucalyptus will work with as open source. So what we've done is essentially threaded the control mechanisms through Eucalyptus that are necessary to take advantage of the ESX and vSphere functionality that VMware provides.

Why target vSphere customers in your first product?