Moving to the cloud does not free you from the decisions you should be making about your information systems. You still need to consider the backup, the security, how you get your data back and where data centers are located. These are all homework items that should be done up front and included in your agreements. When done right they make your cloud computing experience as free of worries as you can get with systems that are in house or in the cloud.

Here is a good article outlining some of these considerations.