Of course, I just mean if you've got
one internal.productname.com or .local or whatever, the problem is not having one domain for each branch.
Like, the public product is www.productname.com, and the internal site is dev.productname.local, right?
But since we set up one instance for each active PR, you have to host the sites at
dev.productname.local/PR11235 and dev/productname.local/PR12345 if you don't have the infrastructure set up to spin them up as pr11235.dev.productname.local and pr12345.dev.productname.local
That was the challenge with "one instance per active PR" we hit. Very handy for both automated and manual testing, but took some work to get the product site to run at arbitrary URLs instead of assuming it had a domain all to itself.