Exam AWS Certified Security - Specialty SCS-C02 topic 1 question 164 discussion

B: AWS PrivateLink and S3 Gateway Endpoint allow you to keep traffic between your VPC and S3 within the AWS network, avoiding the public internet.

Answer is B A. NAT Gateway: While Lambda functions in a private subnet can access the internet through a NAT gateway, it's not recommended for S3 access due to potential latency and security concerns. S3 Gateway Endpoint provides a more secure and performant way. C. Same Subnet: Deploying S3 bucket and Lambda functions in the same subnet wouldn't require a special endpoint, but it's not a best practice. S3 buckets are regionally accessible services, keeping them separate from compute resources offers better security isolation. D. SQS Queue: While SQS can be used for communication between services, it's an unnecessary step in this scenario. The Lambda functions can directly write the incident response summary to the S3 bucket using the S3 Gateway Endpoint.