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Answer Explained: Which AWS service provide key-value NoSQL database that is fully managed and serverless


A company wants a key-value NoSQL database that is fully managed and serverless.

Which AWS service will meet these requirements?

A. Amazon DynamoDB
B. Amazon RDS
C. Amazon Aurora
D. Amazon MemoryDB for Redis


A. Amazon DynamoDB


The AWS service that meets the requirements of a fully managed and serverless key-value NoSQL database is Amazon DynamoDB (Option A).

Amazon DynamoDB is a fully managed NoSQL database service provided by AWS. It offers key-value storage and is designed to handle large-scale applications with high throughput requirements. Here’s why it is the correct choice:

  • Key-Value NoSQL Database: Amazon DynamoDB is a NoSQL database that provides a key-value data model. It allows you to store and retrieve data using a simple primary key, making it suitable for applications that require fast and efficient access to data based on keys.
  • Fully Managed: With Amazon DynamoDB, AWS takes care of managing and operating the database infrastructure on your behalf. This includes tasks such as hardware provisioning, software patching, and database backups. As a result, you don’t have to worry about the operational aspects and can focus on developing your application.
  • Serverless: Amazon DynamoDB is a serverless database service, which means you don’t need to provision or manage any servers. It automatically scales up and down based on the workload, ensuring that you have the necessary resources to handle your application’s demands. This scalability eliminates the need for capacity planning and enables you to pay only for the actual usage.

In contrast, let’s briefly discuss why the other options are not the correct choices:

B. Amazon RDS: Amazon RDS (Relational Database Service) is a managed database service provided by AWS, but it is not a NoSQL database. It is designed for traditional relational databases such as MySQL, PostgreSQL, and Oracle.

C. Amazon Aurora: Amazon Aurora is a relational database engine compatible with MySQL and PostgreSQL. It is also a managed service, but it does not provide a key-value NoSQL data model. It is not suitable for the specific requirements stated in the question.

D. Amazon MemoryDB for Redis: Amazon MemoryDB for Redis is an in-memory database service that supports the Redis data model. It is not a key-value NoSQL database but rather a key-value store with additional features like support for data structures and caching. While it is a managed service, it is not the best fit for the requirements mentioned in the question.

Therefore, based on the given requirements, Option A, Amazon DynamoDB, is the most appropriate choice for a fully managed and serverless key-value NoSQL database.


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