Exam AWS Certified Security - Specialty SCS-C02 topic 1 question 142 discussion

Both C and D should work, but considering the scenario, it only requires writing to S3, and D has less operational overhead and better performance.

Option C

By using a gateway VPC endpoint, the solution remains within the AWS network, ensuring low latency and secure traffic flow without the need for additional infrastructure and complexity

D. However, gateway endpoints do not allow access from on-premises networks, from peered VPCs in other AWS Regions, or through a transit gateway. For those scenarios, you must use an interface endpoint, which is available for an additional cost. https://docs.aws.amazon.com/vpc/latest/privatelink/vpc-endpoints-s3.html

D 100000%%

C A. Transit Gateway: While transit gateways can connect multiple VPCs, they are more complex to set up and manage compared to VPC peering for this specific scenario. They might be a better choice for intricate multi-account VPC connectivity needs. B. Software VPN: A software VPN creates a secure tunnel over the internet, which violates the requirement of avoiding public internet traffic. Additionally, VPNs can introduce performance overhead and management complexity. D. Gateway VPC Endpoint for S3: This option utilizes a Gateway VPC endpoint for S3 access within the VPC in Account A. However, it only allows access to S3 within the same account (Account A). The application needs access to the S3 bucket in a different account (Account B).