Password Interceptor - Server Requirement

What are the server requirements for IdentityNow Password interceptor component?

Based on the documentation Compass Link, the interceptor component must be installed on the domain controller.

However, I see below technical requirements as well. Does this mean that OS on domain controller must be amongst the mentioned list. Similarly, does memory requirement translate to “you need 32MB more on the server”?

Or is there a separate requirement for servers as well.