AWS Certified SAP on AWS – Specialty (PAS-C01) — Question 10

A company is using a multi-account strategy for SAP HANA and SAP BW/4HANA instances across development, QA, and production systems in the same AWS Region. Each system is hosted in its own VPC. The company needs to establish cross-VPC communication between the SAP systems.
The company might add more SAP systems in the future. The company must create connectivity across the SAP systems and hundreds of AWS accounts. The solution must maximize scalability and reliability.
Which solution will meet these requirements?

Answer options

• A. Create an AWS Transit Gateway in a central networking account. Attach the transit gateway to the AWS accounts. Set up routing and a network ACL to establish communication.
• B. Set up VPC peering between the accounts. Configure routing in each VPC to use the VPC peering links.
• C. Create a transit VPC that uses the hub-and-spoke model. Set up routing to use the transit VPC for communication between the SAP systems.
• D. Create a VPC link for each SAP system. Use the VPC links to connect the SAP systems.

Correct answer: A

Explanation

The correct answer is A because using an AWS Transit Gateway allows for scalable and efficient management of connectivity among multiple VPCs across numerous accounts while maintaining high availability. Options B and D do not provide the required scalability for future expansion, and option C, while viable, introduces unnecessary complexity compared to the simplicity and effectiveness of the transit gateway solution.