We have a solution for exposing and consuming the Web Services over the cloud. We call it "Web Services Factory and Aggregator (WSFA)" system.
Currently it allows an integration of majority databases systems over the cloud. It was demonstrated on the Microsoft Azure event in NY for integration of Microsoft SQL Azure cloud database with any local, legacy database.
It can work on local hardware or can be deployed in the "cloud". One of the possible business model is a cooperation with cloud hosting companies. All serious offers will be considered at this time.