I am looking to spin up a Remote Desktop Services server in my home lab (Non-Business related) and I have never purchased CALs before. To my understanding I need to purchase a minimum of 5. What I am unsure of is which type of CAL do I need? I'm looking at Open Licensing but it looks like I have to fit a certain profile. I also saw this one: Microsoft Windows Server 2012 Remote Desktop Services - License - 1 user CAL - MOLP: Open Business - Win - Single Language, but I am not sure that I fit. Also, do I need to purchase a new CAL every year or once I install it is it permanent?