
Amazon CloudFront is a content delivery network (CDN) offered by Amazon Web Services (AWS). It enables fast and efficient distribution of static and dynamic content (such as HTML, CSS and JavaScript files, images and videos) to end users around the world.
CloudFront leverages a network of globally distributed edge locations to deliver content from the nearest location, reducing latency and improving the user experience. Content is automatically cached for faster delivery and can also be dynamically generated.
CloudFront also offers a variety of features including SSL/TLS support, DDoS protection, easy integration with other AWS services such as S3 and EC2, custom error pages, reporting and analysis of access logs.
Cloudfront is also often used in connection with IP obfuscation, as users can hide their Whois queries via the SNI (Server Name Indication) Proxy Protocol function. The topic is especially interesting for advertising providers, pishing scammers and malware authors. However, Amazon is taking measures (checking accounts and data traffic) to protect users from misuse by Cloudfront.
A Cloudfront address consists of the domain name of Cloudfront (z.B. d1nmxiiewlx627.cloudfront.net), followed by the name of the distribution directory provided by Cloudfront. A distribution directory is supported by an Amazon S3 bucket or custom source server address and contains the files to be shipped by Cloudfront.
d1nmxiiewlx627.cloudfront.net/images/example.jpg
In this example, an image file named "example.jpg" is delivered by CloudFront, located in the distribution directory named "images". A practical example would be loading in-game advertisements from CloudFront servers, as is common in various games.
Further domain names of different providers can be found in the entries for Amazon.com, Inc. in the filter files..