Dashboards under their own subdomain

I’m migrating our dashboards and UA scripts to PSU.
In the old situation, our dashboards were hosted under their own subdomain, so https://itdashboard.somecompany.nl lands you right on the IT dashboard.

Should I create proxies with URL rewriting under IIS to point to the URL paths of the two dashboards, or is there a more elegant solution?

n.b. We’re hosting PSU under IIS, with Windows authentication.