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A company runs an enterprise resource planning (ERP) system on Amazon EC2 instances in a...

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A company runs an enterprise resource planning (ERP) system on Amazon EC2 instances in a single AWS Region. Users connect to the ERP system by using a public API that is hosted on the EC2 instances. International users report slow API response times from their data centers.

A solutions architect needs to improve API response times for the international users.

Which solution will meet these requirements MOST cost-effectively?

A.

Set up an AWS Direct Connect connection that has a public virtual interface (VIF) to connect each user's data center to the EC2 instances. Create a Direct Connect gateway for the ERP system API to route user API requests.

B.

Deploy Amazon API Gateway endpoints in multiple Regions. Use Amazon Route 53 latency-based routing to route requests to the nearest endpoint. Configure a VPC peering connection between the Regions to connect to the ERP system.

C.

Set up AWS Global Accelerator. Configure listeners for the necessary ports. Configure endpoint groups for the appropriate Regions to distribute traffic. Create an endpoint in each group for the API.

D.

Use AWS Site-to-Site VPN to establish dedicated VPN tunnels between multiple Regions and user networks. Route traffic to the API through the VPN connections.

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