Your CDN should support an SMIL workflow (most do - if they don’t, find another CDN).
You will server a URL that looks like this:
https://my-cdn-fqdn/live-http-origin/smil:mySMILfile.smil/playlist.m3u8
This article describes how to create and format sn SMIL file using Wowza Streaming Engine Manager:
https://www.wowza.com/docs/how-to-do-adaptive-bitrate-streaming