ExpertEasy1 markMultiple Choice
AWS SAA-C03 · Question 49 · Domain 3.4: Network Performance
A company has 50 VPCs across multiple AWS Regions. The company needs to establish network connectivity between all VPCs. Which solution provides the MOST scalable and high-performing architecture with the LEAST operational overhead?
A company has 50 VPCs across multiple AWS Regions. The company needs to establish network connectivity between all VPCs. Which solution provides the MOST scalable and high-performing architecture with the LEAST operational overhead?
Answer options:
A.
VPC Peering
B.
AWS Transit Gateway
C.
AWS VPN CloudHub
D.
AWS Direct Connect
How to approach this question
When you see 'many VPCs' (more than 3-5) and 'least operational overhead', the answer is always Transit Gateway.
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. It acts as a highly scalable cloud router—each new connection is only made once.
Common mistakes
Choosing VPC Peering, which does not scale well for a large number of VPCs due to the lack of transitive routing.
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