The Tweet Button is a small widget which allows visitors to share content and connect on Twitter.
Amazon CloudFront is a content delivery web service. It integrates with other Amazon Web Services to give developers and businesses an easy way to distribute content to end users with low latency, high data transfer speeds, and no commitments.
Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service.
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".