Amazon CloudFront

Amazon CloudFront is the content delivery network (CDN) service of Amazon Web Services, designed to distribute websites, applications, APIs, video and downloadable content to users around the world with low latency and high transfer speeds. It addresses the performance and reliability problems that arise when all traffic is served from a single origin: distant users experience slow load times, origin servers become overloaded during traffic spikes, and applications are more exposed to network-level attacks. CloudFront solves this by caching and serving content from a global network of hundreds of edge locations and regional edge caches, connected over the AWS backbone, so that requests are handled close to the end user while dynamic traffic is accelerated back to the origin.

The service integrates tightly with other AWS offerings, using Amazon S3, Elastic Load Balancing, EC2, MediaPackage or any custom HTTP server as an origin. Security features include AWS Shield Standard for DDoS protection at no additional charge, integration with AWS WAF for application-layer filtering, TLS encryption with free certificates from AWS Certificate Manager, field-level encryption, signed URLs and cookies, and origin access control to keep S3 buckets private. Edge compute is available through CloudFront Functions for lightweight request manipulation and Lambda@Edge for more complex logic, enabling personalisation, authentication and A/B testing close to the user. Streaming support covers on-demand and live video in common formats, and real-time logs, metrics and reports feed into Amazon CloudWatch and third-party observability tools. Configuration can be managed through the console, APIs, CloudFormation or infrastructure-as-code tools, and flat-rate pricing plans bundling CDN and security have been introduced alongside usage-based billing. CloudFront serves customers of every size, from start-ups to streaming providers, e-commerce retailers, gaming companies, media organisations and enterprises. Pricing is usage-based, starting from around USD 0.09 per gigabyte of data transferred in the listing; there is no free version or free trial listed, although AWS offers a free usage allowance for new and existing accounts.