At its most simplistic, cloud storage is disk at the end of a wire that resides outside of your data center. Many are positioning this as storage for your older digital assets, essentially an archive. Companies in the section of the market include Amazon’s S3 and Nirvanix Storage Delivery Network. The advantage to a turnkey cloud infrastructure is that for a very low entry cost, you are live and ready to go. For many users, for many users that may be compelling enough. Archiving old data to a cloud that you don’t have to worry about also is appealing.”]
Source: https://www.darkreading.com/database-security/cloud-storage-101—part-one