CloudFront is the Content Delivery Network (CDN) from AWS. It is a delivery service used by businesses to distribute their static and dynamic content to the users with low latency (time it takes to load the first byte of the object), high transfer speeds and with minimum costs.
Amazon CloudFront helps to speed up distribution of your content like your HTML, CSS and image files to end users. It integrates with the other Amazon Web Services, like Amazon Simple Storage Service (Amazon S3), Amazon Elastic Compute Cloud (Amazon EC2), Amazon Elastic Load Balancing, and Amazon Route 53. It also works with the other non AWS origin servers which stores the original versions of your files.