Multiple streams on one live streaming resource
Assume you are going to use "external publishing point" to restream your client's 300 streams, If those streams are coming from the same mail URL, then you do not need to create 300 CDN resources. For example, your client has the following stream:
All you need to do is to create a live streaming CDN resource in the control panel and set the external publishing point as "rtmp://domain.com". Please refer to the instruction page to get the CDN streaming URL.