That's pretty much it. I want to have IIS push the default document to browsers instead of making them parse it.
I have a ton of these nano-sites in subdomains so they're easy to remember; currently I deal with it with HAProxy rules or I set the default document in a simple, clean web page that meta-refreshes into the file needed. It looks pretty good — just a good ol' fashioned invisible single-cell table with a pinch of CSS. 1KB. Zero JavaScript — and it has always worked but I keep finding references here and there that it's not okay to use meta-refresh anymore.
I think it's being/was phased out and it will start getting blocked by browsers any minute now. I want to have this covered at least in regards of the servers I use; httpd is fairly straighforward. NGINX and others I actively avoid, but being in a Active Directory domain plus the familiarity of the GUI makes IIS unavoidable. Not to mentioned shared configuration, centralcerts, DFS namespaces/replication, etc.
I hope it doesn't involve changing MIME types but I'll be grateful either way. Any suggestion is welcome. :)
Software version(s): except for one server on WS2019 which is too busy to participate in a farm anyway, all servers are Windows Server 2022 with IIS 10.0.20378.169. Application Request Routing 3.5 and the URL Rewrite 2.0 modules installed.