I'm on the Azure CDN from Verizon. I want to move to Microsoft's CDN offering, because Verizon doesn't handle brotli compression properly.
I need to keep using the same domain. So my Verizon CDN is currently on the domain cdn.mydomain.com, and I want to set up a Microsoft CDN using that same domain.
I've set up a Microsoft CDN in Azure. If I try to add "cdn.mydomain.com", it complains that it cant find a the expected CNAME record for that domain. Of course, the current CNAME record points to the Verizon CDN.
If I go ahead and change the CNAME record for "cdn.mydomain.com" to point the Microsoft CDN, there will be effectively be a downtime from the time I change the CNAME record to the time the Microsoft CDN has been able to verify the ownership of the domain. Last time I tried, this verification process can took about 30 minutes, from what I read it can take up to an hour. If it takes 1 hour, that's 1 hour of downtime.
How can I work around this so I avoid the downtime? Are there alternative ways of verifying that I own the domain, other than changing the CNAME record?
