Thank you for your reply.
But I think that the answer is information on storage (for media library).
I would like to know if it is possible to cache the web page itself and obtain dynamic content from CDN.
In WordPress we can cache the page itself with plugin (it is necessary to synchronize with CDN side at content update timing)
Is it only storage that can be synchronized with Kentico? (Like Azure Blob, AWS S3)
I came across information on the following external cash.
By using this I feel that what I wanted is possible.