I have a question about Kerberos, I have been asked to configure 2 environments of development of hortons with Kerberos, but I have a question if it is possible or I will need in each environment a domain controller, currently I only have a Windows 2019 with Active Directory.
Depending on your number of users, you can see from below what setup is best for you. Normally for DEV and UAT you go for a virtualized environment that takes you to option 2. Your starting point is the Standard edition with 2 VM's install a Hypervisor then installs both DC's to have the best practice & standard install!
WINDOWS SERVER EDITIONS
Now back to your question to the best of my knowledge you cannot install multiple domains on the same server,you can’t share a DC (or same machine) for multiple domains. If you don’t have a physical server, you can have virtual machines you could have a look at multi-site AD setup with this procedure you create the first Active Directory site and add additional Active Directory sites for the multisite deployment.
So my 2 cents advice virtualize the DEV AD it's more cost-effective and easily managed BDR with snapshots a good playground
I tell you, I have a DC that has a domain for example dev.horton.local If I have an Environment dev there is no problem my servers use the KDC, AD without problem. my question arises if now additional to the environment dev I want a test, I could use the DC dev.horton.local to create the new environment and use the same KDC, AD with the difference of using a zone DNS test.horton.local.
That's my doubt, thank you for your support.