One of the biggest risks of cloud computing is that it is highly distributed. Cloud applications and application mash-ups reside in virtual libraries in large remote data centers and server farms that supply business services and data management for multiple corporate clients. To save money and keep costs low, cloud computing providers often distribute work to data centers around the globe where work can be accomplished most efficiently. When you use the cloud, you may not know precisely where your data are being hosted, and you might not even know the country where they are being stored.