This is a very important requirement for business critical data as we do not want the information to be leaked outside the scope of the organization. Cloud providers offer an encryption at rest facility for us. Some vendors choose to do this automatically and some vendors also provide flexibility in letting us choose the encryption keys and methodology for the encrypting/decrypting data that we own. Depending upon the organization policy, we should follow best practices in dealing with this on the Cloud.
With the increase in the performance of storage devices, encryption does not add significant overhead while decrypting/encrypting files. This is depicted in the following image:
Continuing the same example as before, when ...
