The difference between services from the Control Panel and from the Windows Features

 There is a significant difference between the two. This is probably new in Windows 11.

I had to wade through a search, to home in on this difference because I could not enable Internet Information Services Manager by the legacy way of going through Windows Control Panel.

Control Panel --> Programs and Features-> Turn Windows Features on and Off

The above sequence displays the features in which the IIS is missing.

 

However, enabling Internet related items does install IIS. The IIS Manager can even be found in C:\Windows\system32\inetserv. It appears the IIS Manager is not fully functional according to Gemini.

It appears the correct way to enable IIS Manager is via Windows Features which brings up the same Turn windows Features on and off but now you can see the IIS.

Enabling IIS Manager through windows Features is the correct way and from the Services you can now turn on/turn off some of the services like IIS, .NET Framework, or Hyper-V. The windows services for most of other more operations like BitLocker Encryption, Storage management, file system operation, etc.

As Windows evolve things get changed continuously.

See also, here: https://stackoverflow.com/questions/30901434/iis-manager-in-windows-10