Recently, I have been tasked to establish a LAN within my office. I have read that some server roles like domain controller, DNS, DHCP, backup server, Certificate Authority etc. are required to manage LAN. But some people say AAA server is also required, some say database & web server is also required. So I am confused how many different server roles I have to add to make my LAN operational?
Software/Hardware used: Microsoft Windws Server 2012/2016/ Windows 10/7