A CloudFront developer specializes in using Amazon's CloudFront, a content delivery network (CDN) that distributes data, videos, applications, and APIs securely with low latency and high transfer speeds. They optimize the delivery of content to end-users, manage and monitor the CloudFront distributions, and troubleshoot any issues that arise. They also set up security measures, including SSL certificates and AWS WAF (Web Application Firewall), to protect sensitive data. Additionally, they may integrate CloudFront with other AWS services, like or , and continually analyze performance metrics to ensure optimal speed and accessibility.