A company is utilizing AWS Key Management Service (AWS KMS) for data-at-rest encryption and requires client-side encryption for its projects. Due to increased testing of AWS KMS usage across multiple projects, there has been a significant surge in AWS resource consumption, with applications issuing frequent encryption requests to KMS endpoints. The company seeks a solution that ensures unthrottled AWS KMS usage, enhances key management for client-side encryption, and is cost-effective. Which solution meets these criteria? | AWS Certified Security - Specialty Quiz