AWS Certified Cloud Practitioner — Question 557

Which AWS database service provides in-memory data storage?

Answer options

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

Correct answer: B

Explanation

Amazon ElastiCache is a fully managed, in-memory data store and cache service that supports high-performance use cases using Redis or Memcached. While Amazon DynamoDB, Amazon RDS, and Amazon Timestream are robust database services, they store data primarily on SSDs or persistent storage rather than in-memory.