Which solution will meet the requirements at the LOWEST cost?
Provision a Direct Connect gateway and attach the virtual private gateway (VGW) for the VPC in us-east-1 and the VGW for the VPC in us-west-2. Create a private VIF on the Direct Connect connection and associate it to the Direct Connect gateway.
Create private VIFs on the Direct Connect connection for each of the company’s VPCs in the us-east-1 and us-west-2 regions. Configure the company’s data center router to connect directly with the VPCs in those regions via the private VIFs.
Deploy a transit VPC solution using Amazon EC2-based router instances in the us-east-1 region. Establish IPsec VPN tunnels between the transit routers and virtual private gateways (VGWs) located in the us-east-1 and us-west-2 regions, which are attached to the company’s VPCs in those regions. Create a public VIF on the Direct Connect connection and establish IPsec VPN tunnels over the public VIF between the transit routers and the company’s data center router.
Order a second Direct Connect connection to a Direct Connect facility with connectivity to the us-west-2 region. Work with a partner to establish a network extension link over dark fiber from the Direct Connect facility to the company’s data center. Establish private VIFs on the Direct Connect connections for each of the company’s VPCs in the respective regions. Configure the company’s data center router to connect directly with the VPCs in those regions via the private VIFs.
Explanations:
A Direct Connect gateway allows for a single connection to manage multiple VPCs in different regions. It minimizes cost by avoiding the need for multiple connections or complex routing setups while providing predictable performance for the VPCs.
Creating separate private VIFs for each VPC would incur additional costs as each VIF is a separate connection, leading to higher expenses compared to using a Direct Connect gateway.
A transit VPC solution involves deploying EC2 instances and configuring IPsec VPN tunnels, which adds complexity and cost. It is less efficient and more expensive than using a Direct Connect gateway.
Ordering a second Direct Connect connection and establishing dark fiber is significantly more expensive than necessary for connecting to a single VPC in us-west-2, as it involves additional infrastructure and setup costs.