I have one question.
I don’t understand why CDN affect the TTFB.
As CDN will help to load ressources like CSS or images, but as I read, these ressources are loaded after the html content is sent to the browser.
TTFB is only : Time to generate the page + time to send the HTML source right ?
So I don’t understand how CDN impact the TTFB (but I understand how it impact the load page time)