AWS Certified Cloud Practitioner — Question 287

Which AWS database service providers 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. In contrast, Amazon DynamoDB is a NoSQL key-value database, Amazon RDS is a relational database service, and Amazon Timestream is a time-series database, none of which are primarily in-memory storage engines.