Your company has servers located in dozens of VPCs in different availability zones. These VPCs need to connect to each other. You need a service to establish the connections, simplify management and reduce operational costs. Which of the below options is best suited to achieve this requirement?

Answer options:

A.Set up AWS Transit Gateway to provide a hub for connecting VPCs.
B.Set up VPC Peering connections between each VPC.C.Set up Transit VPC as a hub among the VPCs.
D.Establish AWS PrivateLink among different VPCs.

Answer – A
Option A is CORRECT because Transit Gateway acts as a hub to connect different VPCs. It is a fully managed service and can achieve all the requirements.
Option B is incorrect because you need to create lots of VPC Peering connections since there are dozens of VPCs. Unlike Transit Gateway, you have to manage all the connections.
Option C is incorrect because, with Transit VPC, you need to manage and scale EC2 based software appliances. Please check https://docs.aws.amazon.com/whitepapers/latest/building-scalable-secure-multi-vpc-network-infrastructure/transit-gateway-vs-transit-vpc.html for the comparations between Transit Gateway and Transit VPC.Option D is incorrect because AWS PrivateLink is a service to establish private connections with AWS services. It is not a service to manage the connections among VPCs.