Hi @Anjana R ,
In theory, it could be manage Windows Server 2019/2022 using Configuration Manager which are not joined to AD domain, as our mentioned, it is recommended to use CMG firstly, and then IBCM, here is the detailed information: https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/plan-internet-based-client-management
However, as we know, SCCM belongs to the kind of on-premises, if we use CMG or IBCM, it is harder to push client or deploy application and etc. In this situation, it is better to use Intune to manage the client.
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