Explanation
Under the Federal Rules of Civil Procedure, data custodians are assumed and expected to have full and comprehensive knowledge of the internal design and architecture of their systems. In a cloud environment, especially with PaaS and SaaS, it is impossible for the data custodian to have this knowledge because those systems are controlled by the cloud provider and protected as proprietary knowledge.

Integrity is focused on the trustworthiness of data as well as the prevention of unauthorized modification or tampering of it. A prime consideration for maintaining integrity is an emphasis on the change management and configuration management aspects of operations, so that all modifications are predictable, tracked, logged, and verified, whether they are performed by actual human users or systems processes and scripts.