Which AWS service can be deployed to enhance read performance for applications while reading data from NoSQL database?

Answer options:

A.Amazon Route 53
B.Amazon DynamoDB Accelerator
C.Amazon CloudFront
D.AWS Greengrass

Correct Answer – B
Amazon DynamoDB Accelerator (DAX) is a caching service for DynamoDB which can be deployed in VPC in a region where DynamoDB is deployed. For read-heavy applications, DAX can be deployed to increase throughput by providing in-memory caching.
Option A is incorrect because Amazon Route 53 is an AWS DNS service and cannot improve the performance of DynamoDB.Option C is incorrect because Amazon CloudFront is a global content delivery network that cannot be applied to a DynamoDB table.
Option D is incorrect because AWS Greengrass is data caching software for connected devices.
For more information on caching solutions with AWS, refer to the following URL:
https://aws.amazon.com/caching/aws-caching/