AWS Certified Big Data – Specialty — Question 63

A company operates an international business served from a single AWS region. The company wants to expand into a new country. The regulator for that country requires the Data Architect to maintain a log of financial transactions in the country within 24 hours of the product transaction. The production application is latency insensitive. The new country contains another AWS region.
What is the most cost-effective way to meet this requirement?

Answer options

• A. Use CloudFormation to replicate the production application to the new region.
• B. Use Amazon CloudFront to serve application content locally in the country; Amazon CloudFront logs will satisfy the requirement.
• C. Continue to serve customers from the existing region while using Amazon Kinesis to stream transaction data to the regulator.
• D. Use Amazon S3 cross-region replication to copy and persist production transaction logs to a bucket in the new countrys region.

Correct answer: B

Explanation

Option B is correct because Amazon CloudFront can efficiently deliver content while also generating logs that meet the regulatory requirement. The other options either involve unnecessary complexity or costs, such as duplicating applications (A), streaming data that may not be required for compliance (C), or using S3 replication which does not provide real-time logging needed for the 24-hour requirement (D).