What type of Customer Master Key (CMK) is created and managed by AWS services?

The correct answer identifies that the type of Customer Master Key (CMK) created and managed by AWS services is the AWS Managed CMK. This key type is automatically created by AWS for use with specific AWS services, allowing those services to manage the encryption of data without requiring the user to handle key management. The keys are maintained entirely by AWS, which simplifies the process for users who need encryption capabilities but do not want the overhead of managing the keys themselves.

With AWS Managed CMKs, AWS takes care of key rotation and lifecycle management, ensuring that keys are maintained according to best practices. This is particularly useful for services that integrate tightly with AWS services, as users can quickly enable encryption without delving deep into key management tasks.

In contrast, Customer-managed CMKs are keys that users create and control, offering more flexibility and customization options but requiring users to handle aspects like rotation and deletion. Multi-Region CMKs, on the other hand, allow the same key to be used across different AWS regions while requiring the management performed by the customer. Service-specific CMKs are linked to a specific service and not available for other services which also requires user management to some extent.

The AWS Managed CMK offers an effortless way to utilize encryption seamlessly connected with the broader