ICP requirements for CDN services

Hi, I only want to speed up video content delivery from my website into China. Thus my only requirement is to reach into an agreement witn a CDN services provider with endpoints within China. My understanding is I only need an ICP Filling, is that correct? How does the Filling differ from the license? On the other hand, if I want to web-accelerate my site while the infrastructure remains abroad China; do I still need the ICP license?

There is two situation about ICP:
1. If you only use CDN in China mainland, you must do ICP MIIT China, not have to do it in Alibaba Cloud
2. If you do not use the production or service in Alibaba Cloud, you don't need do something with ICP.