Hello, you can find in https://learn.microsoft.com/en-us/deployoffice/ltsc2021/overview: These Office products use Click-to-Run, instead of Windows Installer (MSI), as the installation technology. But, how you activate these Office products – for example, by using Key Management Service (KMS) – remains the same. So even though you are using an RDS server, you have to assign a license to every user. Besides, you have to buy RDS license CAL, it will bring extra cost.
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