Which solution meets these requirements?
Configure three AWS Site-to-Site VPN connections from the data center to AWS. Establish connectivity by configuring one VPN connection for each VPC.
Launch a third-party virtual network appliance in each VPC. Establish an IPsec VPN tunnel between the data center and each virtual appliance.
Set up three AWS Direct Connect connections from the data center to a Direct Connect gateway in us-east-1. Establish connectivity by configuring each VPC to use one of the Direct Connect connections.
Set up one AWS Direct Connect connection from the data center to AWS. Create a transit gateway, and attach each VPC to the transit gateway. Establish connectivity between the Direct Connect connection and the transit gateway.
Explanations:
While configuring three AWS Site-to-Site VPN connections could enable connectivity between the on-premises data center and each VPC, this approach would not be cost-effective for transferring hundreds of gigabytes of data daily. VPN connections can introduce latency and bandwidth limitations compared to dedicated connections.
Launching third-party virtual network appliances adds complexity and cost. Additionally, IPsec VPN tunnels may not provide the required performance for transferring large amounts of data consistently, making this solution less optimal.
Setting up three AWS Direct Connect connections is not necessary for each VPC. This option would be cost-prohibitive and inefficient, as it would involve maintaining multiple connections instead of utilizing a single connection for all VPCs.
Establishing one AWS Direct Connect connection to a transit gateway is the most cost-effective solution. This setup allows for high bandwidth, low latency connectivity between the on-premises data center and all three VPCs. The transit gateway simplifies network management and provides efficient routing for data transfer.
I structure that the answer is:
Set up one AWS Direct Connect connection from the data center to AWS. Create a transit gateway, and attach each VPC to the transit gateway. Establish connectivity between the Direct Connect connection and the transit gateway.