A company has 50 VPCs spread across multiple AWS Regions. They need to establish a hub-and-spoke network topology to route traffic between all VPCs and their on-premises data center. Which service provides the MOST scalable and high-performing architecture?

Answer options:

VPC Peering

AWS Transit Gateway

AWS VPN CloudHub

AWS Direct Connect Gateway

How to approach this question

Identify 'hub-and-spoke' and 'multiple VPCs'. AWS Transit Gateway is the standard solution for this.

Full Answer

B.AWS Transit Gateway✓ Correct

AWS Transit Gateway connects VPCs and on-premises networks through a central hub. This simplifies your network and puts an end to complex peering relationships.

Common mistakes

Choosing VPC Peering, which does not support transitive routing (hub-and-spoke).

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