AWS Certified Solutions Architect – Professional — Question 8

A company wants to move a web application to AWS. The application stores session information locally on each web server, which will make auto scaling difficult.
As part of the migration, the application will be rewritten to decouple the session data from the web servers. The company requires low latency, scalability, and availability.
Which service will meet the requirements for storing the session information in the MOST cost-effective way?

Answer options

Correct answer: D

Explanation

Amazon ElastiCache with the Redis engine is the best choice because it offers low latency, high availability, and scalability, which are crucial for session management in a web application. While Amazon ElastiCache with the Memcached engine is also a viable option, Redis provides additional features like data persistence and advanced data structures. Amazon S3 and Amazon RDS MySQL do not meet the requirements for low latency session storage effectively.