Well, you'll need an operating system license for each physical server installed. Then also plan on either some user or device Cals. A Windows Server CAL is a license that grants access Windows Server. CALs are used in conjunction with Microsoft Windows Server OS licenses to allow Users and/or Devices to access and utilize the services of that windows server
- User CALs allow a single user access to Windows Server from an unlimited number of devices
- Device CALs allow an unlimited number of users to access Windows Server from a single device
- CALs are licensed to access servers of the same level and below. (not forward compatible)
Some pricing mentioned here.
https://www.microsoft.com/en-us/windows-server/pricing
https://www.microsoft.com/en-us/d/windows-server-2022-standard-cal/dg7gmgf0d6m5?activetab=pivot:overviewtab
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