What must you do to enable encryption at rest using EC2 and Elastic Block Store (EBS)?

To enable encryption at rest using EC2 and Elastic Block Store (EBS), configuring encryption when creating the EBS volume is essential. When you create a new EBS volume, you have the option to enable encryption. This ensures that all data stored on the volume is automatically encrypted using AWS Key Management Service (KMS) and the encryption key is managed securely.

Once encryption is enabled for an EBS volume, all data written to the volume is encrypted, and data read from the volume is decrypted on-the-fly, allowing you to operate with the encrypted data seamlessly. This level of integration simplifies the encryption process, providing built-in security measures without requiring additional coding or management overhead.

The encryption can be applied at creation time and cannot be enabled or disabled afterward for an already existing volume, which emphasizes the importance of configuring this setting correctly during volume creation. This ensures compliance with security policies and protects sensitive data effectively.