keni

It is hosted by Pearson. It is a cloud based service just like Google Apps. They do have a revenue model, although I am not sure it has been completely released yet.

Our school is actually one of the beta testers, and I think it is important to point out that it is not actually a Google product, but a Pearson product. So although it is available through the Marketplace and plays nicely with Apps, it is not provided by Google.