Are you confused about what exactly is cloud computing? Then have a look at this little video. It is quite simplistic but may help to get the main idea across
While cloud computing certainly has its advantages, one of th big issues with it is security. If you are basically relying on another business to look after your data, there could be privacy breaches, and what if the company goes bust? Currently what items a patron borrows is private. What if this information got out?
All I’m saying is if a library was thinking of utilising this method of managing their data, they would need to look at the contract very, very carefully.