Additional Microsoft Defender tools and services that provide security across various platforms and environments
Hello Rosalina Liu,
it depends what you want to enroll, for Arc-Enabled server, you can easily enable ESU as it is consumption-based through the Azure portal. For the rest cases, like Windows 10, non Arc-Enabled on-prem Servers you will have to obtain Extended Security Update (ESU) licenses Multiple Activation Keys (MAK).
You may check the documentation below for further help:
- https://learn.microsoft.com/en-us/training/modules/azure-arc-esu-windows-server/3-obtain-extended-security-updates-for-windows-server
- https://learn.microsoft.com/en-us/windows/whats-new/enable-extended-security-updates?source=recommendations
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