"With Open Source, many "Small Business" solutions have emerged, such as Zentyal, ClearOS, Univention and others. Unfortunately these solutions are usually limited and their expansion of functionality requires the purchase of Plugins. So in our search for a 100% functional solution, NethServer comes up."
"NethServer is a 100% Open Source Small Business solution and its business model focuses on Support, Appliances and Books, similar to the FreeNAS, Proxmox and Zabbix business model."
"After this brief explanation of Nethserver, let's start with the steps to configure Nethserver as a "Primary Domain Controller" (PDC) that can integrate and serve on a private network made up of Ubuntu Desktop Stations , Windows 7, 8 and 10, OsX Mac among others."
VERY GOOD CHOICE @cosysco !