setting up Azure instance and supporting services with online domain space tied to Office 365 tenant and production website all using the same domain.

Question

We have an Office 365 tenant operating in the space of let's say "mygreatcompany.com", we also have a production website with the same domain - "mygreatcompany.com", in setting up Azure services (specifically Domain Services) I set it up with the same domain space "mygreatcompany.com", do I need to add specific DNS entries to accommodate this? If I setup a DC VM in this Azure space, will I be able to create the domain space for "mygreatcompany.com" on the DC and make it authoritative?

Answer 1

Hi @Christian Pedder

Thank you for post!

To answer your question Yes, you would need to add specific DNS entries to accommodate the setup of Azure services with the same domain as your Office 365 tenant.

You can set up Azure Domain Services with the same domain by adding the custom domain to the Azure Active Directory and configuring the DNS records.
When you set up Domain Services in Azure, it creates a managed domain that is separate from your on-premises domain and your Office 365 tenant. You can configure the DNS settings for the managed domain to include the necessary DNS entries for your production website and other Azure services.

In order to establish the DC VM as the authority source for the “mygreatcompany.com” domain, you’ll first need to create a new forest within Active Directory, configured to utilize the “mygreatcompany.com” domain name.

Reference: https://learn.microsoft.com/en-us/entra/identity/domain-services/tutorial-create-instance

Hope this helps. Do let us know if you any further queries.

Thanks,

Akhilesh.

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