The "cdn1discovery" naming convention suggests a node or an origin server owned by Discovery (now part of Warner Bros. Discovery). CDNs are used to distribute heavy media files—like 4K video, promotional assets, and high-resolution images—to various geographic locations to reduce latency.
FTP (File Transfer Protocol) has been a standard for moving files between computers since 1971. In a CDN context, a hostname like cdn1discovery often acts as the "front door" for your files. Instead of uploading through a slow web interface, FTP allows you to: cdn1discovery ftp