Replacing OnPremise AD Domain Controllers & Exchange Servers with Active Directory Domain Services

Hello @EnterpriseArchitect ,

There is a detailed article of the most common features and advantages for Azure AD bvs OnPremise AD. You can find it here: https://learn.microsoft.com/en-us/azure/active-directory/fundamentals/active-directory-compare-azure-ad-to-ad

On the other hand, if you need more detailed information about the advantages, it may be related to your environment, systems, security and management policies, for which it would be recommended to get in touch with a Microsoft Trusted Partner to explore a specialized solution.

You can find Partners next to you through the next link: https://learn.microsoft.com/en-us/partner-center/find-a-partner

Hope this helps with your query,

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Hi,

If your have migrated all mailbox to Exchange online, and your Exchange server are not used , you can decom them.

The Decommissioning of domain controllers is not easy, even if you have migrated all your applications to the cloud, workstations can be impacted since GPOs are managed by the active directory.

Please don't forget to mark helpful reply as answer

@EnterpriseArchitect

For Exchange server, after you migrated all mailboxes and needed public folder to Exchange online, if you don't need to use Exchange on-premises. You could uninstall the Exchange on-premises and local AD: How and when to decommission your on-premises Exchange servers in a hybrid deployment

If you still need to local AD function, such as login in computer with local AD account credentials. You need to keep local AD and at least one Exchange server. Actually, after migrating AD accounts to Azure AD, all computers could join AAD domain and login with AAD credentials.

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