AWS Cloud Architect Practice Exam 2026 - Full Prep Guide

Using Read Replicas in Amazon RDS specifically enhances performance by offloading read traffic. This means that when you have a database that experiences high read demand, you can create one or more Read Replicas that will handle the read operations. This allows the primary database instance to focus on write operations, which can lead to improved overall system performance.

With this setup, applications can direct their read queries to these replicas, reducing the load on the primary instance and allowing it to manage write operations more efficiently. This can be particularly beneficial for read-heavy applications or scenarios where the main database may be bottlenecked by excessive read requests.

In contrast, options related to redundancy, write performance, or backup elimination do not accurately represent the primary use case for Read Replicas. While Read Replicas can play a role in disaster recovery solutions, their main purpose is to balance read traffic rather than ensuring redundancy or improving write operations.