The correct answer is D, Amazon CloudFront. CloudFront is a content delivery network (CDN) service provided by AWS that is designed to deliver content to users with low latency by caching the content at edge locations closer to the end-users. This ensures that when users request videos or other content, it is served quickly, reducing the time it takes for the content to travel from the origin server to the user's device. The other options, while useful in different scenarios, do not specifically address the requirement of low-latency content delivery for videos in a global application.