Master AWS DevOps Pro 2025 – Conquer the Cloud with Confidence!

Amazon CloudFront is the correct answer because it is a content delivery network (CDN) service that reduces costs associated with data transfer by caching content closer to users. When end-users request content, CloudFront retrieves it from the nearest edge location, which minimizes the distance the data needs to travel. This not only speeds up content delivery but also reduces the amount of data transferred from the origin server, leading to cost savings.

Using CloudFront can also help leverage AWS's cost-effective data transfer rates compared to fetching data directly over the internet. The consolidation of data transfer through CloudFront allows users to take advantage of lower bandwidth costs and improve performance for their applications.

In contrast, while other services like Amazon S3 facilitate data storage and can serve content directly, they do not provide the same level of cost savings through efficient data transfer optimization as CloudFront. Services like Amazon RDS and AWS Lambda are primarily focused on database management and serverless computing, respectively, and do not provide significant benefits related to reducing data transfer costs directly.