You need to implement an encryption-at-rest strategy that protects sensitive data and reduces key management...

Encrypt non-sensitive data with Google default encryption:

Google Cloud automatically encrypts data at rest using AES-256 by default. This minimizes key management complexity for non-sensitive data as it is handled entirely by Google.

No additional setup is required for default encryption, ensuring low latency access to the encrypted data.

Encrypt sensitive data with Cloud Key Management Service (Cloud KMS):

Cloud KMS allows you to create and manage cryptographic keys in a centralized cloud service.

To meet the requirement of scheduling key rotation, configure Cloud KMS to automatically rotate keys on a regular schedule (e.g., every 90 days).

Control the region where the keys are stored by selecting the appropriate key ring location during key creation. This ensures compliance with data residency requirements.

Cloud KMS provides low-latency access to keys, ensuring minimal impact on data access performance.