Answer: Set up an Amazon CloudFront distribution., Create a read replica for the RDS DB instance.

## Explanation **Correct Answers:** B and D **Why these are correct:** 1. **B. Set up an Amazon CloudFront distribution:** - CloudFront is a Content Delivery Network (CDN) that caches static content at edge locations worldwide - This reduces latency for users by serving content from locations closer to them - Static content (images, CSS, JavaScript) can be cached, improving page load times - CloudFront also supports dynamic content acceleration through various optimization techniques 2. **D. Create a read replica for the RDS DB instance:** - Read replicas offload read traffic from the primary database instance - OLTP databases often have heavy read operations that can be directed to read replicas - This reduces the load on the primary database, improving performance for both read and write operations - Read replicas can be placed in different regions to serve users closer to their geographic location **Why other options are incorrect:** - **A. Configure an Amazon Redshift cluster:** Redshift is for data warehousing and analytics, not for improving web application performance. It's designed for complex queries on large datasets, not OLTP workloads. - **C. Host the dynamic web content in Amazon S3:** S3 is excellent for static content but not suitable for dynamic content that requires server-side processing. Dynamic content should be served by application servers, not stored in S3. - **E. Configure a Multi-AZ deployment for the RDS DB instance:** Multi-AZ provides high availability and failover capabilities but doesn't directly improve performance. It's for disaster recovery, not performance optimization. **Additional considerations:** - For further performance improvements, consider implementing caching layers (ElastiCache) - Use Auto Scaling for application servers to handle traffic spikes - Implement database query optimization and indexing - Consider using Amazon Aurora for better performance than standard RDS

Author: LeetQuiz Editorial Team