I'm having difficulty determining how this impacts subdomains. From what I can tell a.example.com, b.example.com, and example.com would all have their own cach

I'm having difficulty determining how this impacts subdomains. From what I can tell a.example.com, b.example.com, and example.com would all have their own caches, correct? We have multiple (sub)domains a|b|c.xxx.example.com that share a template, and therefore resources (we're a .edu). If we're now looking at an initial load hit for all of them, that may impact how we've been setting up landing pages for campaigns. I can't see us completely moving away from a CDN because of the other benefits they provide.