A photo processing application frequently uploads and downloads images from Amazon S3 buckets in the same AWS Region. Data transfer fees have increased and need to be reduced. Which solution will lower these costs?
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Correct answer: Deploy an S3 VPC gateway endpoint into the VPC and attach an endpoint policy that allows access to the S3 buckets..
Why this is the answer
Deploying an S3 VPC gateway endpoint allows instances within your VPC to access S3 privately without traversing the internet, and critically, data transfer through a gateway endpoint to S3 in the same region is free of charge. This directly addresses the goal of reducing data transfer fees. Incorrect options: Deploying Amazon API Gateway or a NAT Gateway would incur additional costs for data processing and data transfer, respectively, and would not reduce the S3 data transfer fees. Deploying the application into a public subnet and routing through an internet gateway would still incur standard internet data transfer charges for S3 access, which is what the question aims to reduce.
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