A company has 50 VPCs across multiple AWS accounts. They want to inspect all traffic leaving the VPCs for the internet using a centralized firewall appliance. What is the MOST scalable architecture?

Answer options:

Deploy AWS Network Firewall in every VPC.

Use VPC Peering to connect all VPCs in a full mesh.

Connect all VPCs to an AWS Transit Gateway. Route traffic to a central inspection VPC.

Use AWS WAF on the internet gateways of all VPCs.

How to approach this question

Look for a hub-and-spoke network architecture.

Full Answer

C.Connect all VPCs to an AWS Transit Gateway. Route traffic to a central inspection VPC.✓ Correct

AWS Transit Gateway acts as a central hub. Routing traffic to a dedicated inspection VPC allows centralized security inspection using AWS Network Firewall.

Common mistakes

Choosing VPC Peering for a large number of VPCs.

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