A company utilizes Amazon S3 to store sensitive customer data. They are required by compliance regulations to encrypt their data at rest. Which of the following options adheres to security best practices for managing encryption keys for this scenario?
Implement AWS Certificate Manager (ACM) to create and manage encryption keys used for Amazon S3 server-side encryption.
Use AWS Key Management Service (KMS) with customer-managed keys (CMKs) and enable automatic key rotation.
Store the encryption keys in the same Amazon S3 bucket as the data, using a dedicated directory for keys.
Use AWS Secrets Manager to create and manage encryption keys for Amazon S3 data encryption.