AWS Certified Cloud Practitioner — Question 428

Which service is an AWS in-memory data store service?

Answer options

• A. Amazon Aurora
• B. Amazon RDS
• C. Amazon DynamoDB
• D. Amazon ElastiCache

Correct answer: D

Explanation

Amazon ElastiCache is a fully managed, in-memory data store and cache service supporting Redis and Memcached. In contrast, Amazon Aurora and Amazon RDS are relational databases, and Amazon DynamoDB is a key-value NoSQL database, all of which primarily store data on persistent disk storage rather than in-memory.