Which AWS service offers a content delivery network (CDN)?

The service that offers a content delivery network (CDN) is AWS CloudFront. CloudFront is designed to deliver content with low latency and high transfer speeds by using a worldwide network of data centers, known as edge locations. When a user requests content, CloudFront serves it from the nearest edge location to ensure optimal performance.

This makes it particularly valuable for websites, APIs, and media distribution, where fast and reliable content delivery is critical. CloudFront can also be integrated with other AWS services, such as S3 for static file hosting or EC2 for dynamic content, enhancing its capabilities in managing and delivering web assets efficiently across various geographic regions.

Other services mentioned do not provide CDN functionality. For instance, AWS Route 53 is a scalable domain name system (DNS) web service that can route users to AWS resources but does not cache or deliver content. AWS Direct Connect offers a dedicated network connection from your premises to AWS, which is more about establishing a network link than content delivery. AWS S3 (Simple Storage Service) is a storage service for objects, allowing users to store and retrieve any amount of data but lacks built-in CDN features, though it can be used in conjunction with CloudFront for content distribution.