AWS Certified Solutions Architect - Associate
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In the us-east-1 Region, a company with multiple VPCs across various AWS accounts seeks the most operationally efficient method to interconnect these VPCs. What should the networking team, managing the cloud network from their own AWS account, implement?
Explanation:
The most operationally efficient solution to connect multiple VPCs across hundreds of AWS accounts is to use an AWS Transit Gateway. This is because it allows for centralized management of routing configurations and simplifies VPC interconnectivity. Setting up VPC peering (Option A) for numerous VPCs can become complex and difficult to manage. Using NAT gateways and internet gateways (Option B) is less secure and not ideal for private VPC communication. Deploying VPN gateways and creating a transit VPC (Option D) is more complex and less efficient than using an AWS Transit Gateway. Hence, Option C, creating an AWS Transit Gateway in the networking team’s AWS account and configuring static routes from each VPC, is the correct answer.