Which solution will meet these requirements?
Deploy an interface VPC endpoint for Amazon EC2. Create an AWS Site-to-Site VPN connection between the company and the VPC.
Deploy a gateway VPC endpoint for Amazon S3. Set up an AWS Direct Connect connection between the on-premises network and the VPC.
Set up an AWS Transit Gateway connection from the VPC to the S3 buckets. Create an AWS Site-to-Site VPN connection between the company and the VPC.
Set up proxy EC2 instances that have routes to NAT gateways. Configure the proxy EC2 instances to fetch S3 data and feed the application instances.
Explanations:
An interface VPC endpoint for Amazon EC2 does not facilitate secure data transfer to S3. Additionally, a Site-to-Site VPN connection provides a secure connection to the on-premises data center but does not address the requirement of transferring data to S3 without using the public internet.
A gateway VPC endpoint for Amazon S3 allows secure access to S3 from the VPC without traversing the public internet, meeting compliance requirements. AWS Direct Connect provides a private, dedicated connection between the on-premises data center and the VPC, ensuring secure data transmission without using the public internet.
An AWS Transit Gateway is used for connecting multiple VPCs and on-premises networks but does not directly facilitate S3 access. While it can help in routing, it does not meet the requirement of secure access to S3 without the public internet. A Site-to-Site VPN alone does not secure the S3 connection.
Proxy EC2 instances would add unnecessary complexity and latency to the process of fetching S3 data. They would also still require public internet access to communicate with S3 unless configured with a VPC endpoint, which is not specified here. This option does not fulfill the compliance requirement as directly as a gateway VPC endpoint would.
I design that the answer is:
Deploy a gateway VPC endpoint for Amazon S3. Set up an AWS Direct Connect connection between the on-premises network and the VPC.