AWS Certified Solutions Architect – Associate (SAA-C02) — Question 679

An ecommerce company stores terabytes of customer data in the AWS Cloud. The data contains personally identifiable information (PII). The company wants to use the data in three applications. Only one of the applications needs to process the PII. The PII must be removed before the other two applications process the data.
Which solution will meet these requirements with the LEAST operational overhead?

Answer options

• A. Store the data in an Amazon DynamoDB table. Create a proxy application layer to intercept and process the data that each application requests.
• B. Store the data in an Amazon S3 bucket. Process and transform the data by using S3 Object Lambda before returning the data to the requesting application.
• C. Process the data and store the transformed data in three separate Amazon S3 buckets so that each application has its own custom dataset. Point each application to its respective S3 bucket.
• D. Process the data and store the transformed data in three separate Amazon DynamoDB tables so that each application has its own custom dataset. Point each application to its respective DynamoDB table.

Correct answer: C

Explanation

Option C is the most operationally efficient solution because pre-processing the data and hosting it in three separate Amazon S3 buckets utilizes simple, highly durable, and cost-effective storage with minimal management overhead. Options A and D introduce high operational overhead and cost by using Amazon DynamoDB and requiring the management of custom proxy code or database scaling for terabytes of data. Option B is incorrect as implementing and maintaining custom S3 Object Lambda functions introduces more development and operational overhead compared to using separate S3 buckets.