CCSP: Certified Cloud Security Professional

Cryptographic erasure sanitizes encrypted volume data by destroying the encryption key, making the data infeasible to recover without physical access to the underlying storage media. Degaussing, demagnetizing, and shredding require physical handling of provider-owned hardware, which an IaaS customer does not control. NIST identifies cryptographic erase as a logical purge technique and specifically addresses its applicability to logical or virtual storage such as cloud storage.