You are an AWS Solutions Architect. Your company has a successful web application deployed across multiple AWS Regions. The application attracts more and more global customers. However, the application’s performance is impacted. Your manager asks you how to improve the performance and availability of the application. Which of the following AWS services would you recommend?

Answer options:

A.AWS DataSync
B.Amazon DynamoDB Accelerator
C.AWS Lake Formation
D.AWS Global Accelerator

Correct Answer – D
AWS Global accelerator provides static IP addresses that are anycast in the AWS edge network. Incoming traffic is distributed across endpoints in AWS regions. The performance and availability of the application are improved.
Option A is incorrect: Because DataSync is a tool to automate the data transfer and does not improve the performance.
Option B is incorrect: DynamoDB is not mentioned in this question.
Option C is incorrect: Because AWS Lake Formation is used to manage a large amount of data in AWS, which would not help in this situation.
Option D is CORRECT: Check the AWS Global Accelerator use cases in https://docs.aws.amazon.com/global-accelerator/latest/dg/introduction-benefits-of-migrating.html. The Global Accelerator service can improve both the application performance and availability.