How to select licenses for Windows Server 2012 r2?

Question

Law in IT

Good afternoon!
We bought a server, invited a specialist who installed Windows Server 2012 r2 and... happily forgot about it for a year.
Now we decided to return to the issue and continue. That specialist has already disappeared without a trace, but left a paper that says that you need to purchase the following licenses:
1. Microsoft Windows Server Standard Edition 2012 R2
2. Remote Desktop Services Client Access License
3. Microsoft Windows Server CAL 2012
Well, questions:
1. Regarding the first license, as far as I understand, we will need a corporate one, since OEM is not purchased, and a boxed one is more expensive. How to buy a corporate? Where to register?
2. As for terminal licenses: we have more computers than people, so we will buy licenses for users. What is the binding mechanism? By license for each username entered in the system or by the number of simultaneous connections?
3. Does the same apply to Microsoft Windows Server CALs as to terminal licenses?
Thanks for the help!

Answer 1

In fact, that "specialist" should not have installed the system without a license, at least for the OS.
Now you will need to purchase licenses for Server 2016, since you will most likely not find anything on sale for 2012.
Microsoft Windows Server Standard Core 2016 SNGL OLP 2Lic NL CoreLic - calculated by the number of server cores, for every incomplete two cores one license, but not less than 8 cores (4 licenses).
Microsoft Windows Remote Desktop Services CAL 2016 SNGL OLP NL UsrCAL - remote desktop licenses, by number of users. They are more expensive than the device, so consider for yourself. The license is assigned to the user at the first connection and cannot be transferred more than once every three months. Licenses are activated and taken into account by the system.
Microsoft Windows Server CAL 2016 SNGL OLP NL UsrCAL - server access licenses. Needed for each user using server resources (RDP, shared folders, shared printers, etc.). Licenses are simply purchased and are not entered anywhere, they are not displayed anywhere in the system.
If I'm not mistaken, these licenses include the right to downgrade, that is, keys for previous versions of Windows Server will be available to you on the Microsoft website.
If you use some software on the server, then look at the licenses for it as well. For example, MS Office to work on a terminal server requires that each device from which they connect to the server has a separate license for MS Office, a version no lower than that on the server.

Answer 2

Cdalai not through "button", but through "a". "a" has a download attribute.