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You are a solutions architect working for a regional bank that is moving its data center to the AWS cloud. You need to migrate your data center storage to a new S3 and EFS data store in AWS. Since your data includes Personally Identifiable Information (PII), you have been asked to transfer data from your data center to AWS without traveling over the public internet. Which option gives you the most efficient solution that meets your requirements?

A. Migrate your on-prem data to AWS using the DataSync agent using NAT Gateway

B. Create a public VPC endpoint, and configure the DataSync agent to communicate to the DataSync public service endpoints via the VPC endpoint using Direct Connect

C. Migrate your on-prem data to AWS using the DataSync agent using Internet Gateway

D. Create a private VPC endpoint, and configure the DataSync agent to communicate to the DataSync private service endpoints via the VPC endpoint using VPN

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D. Create a private VPC endpoint, and configure the DataSync agent to communicate to the DataSync private service endpoints via the VPC endpoint using VPN

Answer: D
Explanation
AWs documentation mentions the following:
While configuring this setup,  you’ll place a private VPC endpoint in your VPC that connects to the DataSync service. This endpoint will be used for communication between your agent and the DataSync service.
In addition, for each transfer task, four elastic network interfaces (ENIs) will automatically get placed in your VPC. DataSync agent will send traffic through these ENIs in order to transfer data from your on-premises shares into AWS.
“When you use DataSync with a private VPC endpoint, the DataSync agent can communicate directly with AWS without the need to cross the public internet.“
Option A is incorrect. To ensure your data isn’t sent over the public internet, you need to use a VPC endpoint to connect the DataSync agent to the DataSync service endpoints.
Option B is incorrect. You need to use a private VPC endpoint, not the public VPC endpoint to keep your data away from traveling over the public internet.
Option C is incorrect. Using the Internet Gateway by definition sends your traffic over the public internet, which is the solution as per the requirement.
Option D is correct. Using a private VPC endpoint and the DataSync private service endpoints to communicate over your VPN will give you the non-internet transfer you require.
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