Which solution will meet these requirements?
Create an AWS Site-to-Site VPN connection between the on-premises data center and a new central VPC. Create VPC peering connections that initiate from the central VPC to all other VPCs.
Create an AWS Direct Connect connection between the on-premises data center and AWS. Provision a transit VIF, and connect it to a Direct Connect gateway. Connect the Direct Connect gateway to all the other VPCs by using a transit gateway in each Region.
Create an AWS Site-to-Site VPN connection between the on-premises data center and a new central VPUse a transit gateway with dynamic routing. Connect the transit gateway to all other VPCs.
Create an AWS Direct Connect connection between the on-premises data center and AWS. Establish an AWS Site-to-Site VPN connection between all VPCs in each Region. Create VPC peering connections that initiate from the central VPC to all other VPCs.
Explanations:
VPC peering does not support transitive routing, so this setup would not allow communication between VPCs through the central VPC. Additionally, this solution may lead to higher outbound traffic costs and does not optimize bandwidth.
This solution utilizes AWS Direct Connect, which provides a dedicated, high-bandwidth connection to AWS. The transit VIF and Direct Connect gateway enable transitive routing to all VPCs, optimizing bandwidth and reducing outbound costs while providing a consistent network experience.
Although using a transit gateway with dynamic routing can simplify VPC management, a Site-to-Site VPN connection does not offer the same level of bandwidth and reliability as Direct Connect, potentially leading to higher outbound costs and less consistent performance.
This approach would involve multiple Site-to-Site VPN connections, which can become complex and would not provide the efficient transitive routing that a Direct Connect solution offers. Additionally, it may not effectively reduce outbound traffic costs or optimize bandwidth.