A leading telecommunications company has developed its cloud storage solution on Amazon RDS for MySQL but it's running into performance issues despite using Read Replicas. The company has hired you as an AWS Certified Solutions Architect Professional to address these performance-related challenges on an urgent basis without moving away from the underlying relational database schema. The company has branch offices across the world, and it needs the solution to work on a global scale. Which of the following will you recommend as the MOST cost-effective and high-performance solution?