AWS Certified Solutions Architect – Professional — Question 234

A software as a service (SaaS) company offers a cloud solution for document management to private law firms and the public sector. A local government client recently mandated that highly confidential documents cannot be stored outside the country. The company CIO asks a Solutions Architect to ensure the application can adapt to this new requirement. The CIO also wants to have a proper backup plan for these documents, as backups are not currently performed.
What solution meets these requirements?

Answer options

• A. Tag documents that are not highly confidential as regular in Amazon S3. Create individual S3 buckets for each user. Upload objects to each user's bucket. Set S3 bucket replication from these buckets to a central S3 bucket in a different AWS account and AWS Region. Configure an AWS Lambda function triggered by scheduled events in Amazon CloudWatch to delete objects that are tagged as secret in the S3 backup bucket.
• B. Tag documents as either regular or secret in Amazon S3. Create an individual S3 backup bucket in the same AWS account and AWS Region. Create a cross- region S3 bucket in a separate AWS account. Set proper IAM roles to allow cross-region permissions to the S3 buckets. Configure an AWS Lambda function triggered by Amazon CloudWatch scheduled events to copy objects that are tagged as secret to the S3 backup bucket and objects tagged as normal to the cross-region S3 bucket.
• C. Tag documents as either regular or secret in Amazon S3. Create an individual S3 backup bucket in the same AWS account and AWS Region. Use S3 selective cross-region replication based on object tags to move regular documents to an S3 bucket in a different AWS Region. Configure an AWS Lambda function that triggers when new S3 objects are created in the main bucket to replicate only documents tagged as secret into the S3 bucket in the same AWS Region.
• D. Tag highly confidential documents as secret in Amazon S3. Create an individual S3 backup bucket in the same AWS account and AWS Region. Use S3 selective cross-region replication based on object tags to move regular documents to a different AWS Region. Create an Amazon CloudWatch Events rule for new S3 objects tagged as secret to trigger an AWS Lambda function to replicate them into a separate bucket in the same AWS Region.

Correct answer: C

Explanation

Option C is correct because it ensures that sensitive documents are replicated within the same AWS Region, complying with the client's requirement. It also uses selective cross-region replication for regular documents, maintaining a proper backup strategy. The other options either allow for documents to be stored outside the country or do not adequately address the backup requirement.