I am in the process of replacing a Win 2008 R2 server with a new Dell server running the Win 2016 OS. The new server was purchased with 2019 installed, but I had to downgrade to 2016 because the client's critical application is not compatible with 2019. The downgrade media came with the server from Dell. The old 2008 server is a Domain Controller and has RDS services installed. I know it is not recommended, but can I make this new 2016 server both a Domain Controller and a RDS server?
If answer is yes, then is there any preparatory steps that I need to preformed on the downgraded OS before installing the features? Does it matter in which order the features are installed? Domain Controller first or RDS first?