How to confirm the Hybrid environment?

Resolution:

A hybrid infrastructure is a combination of on-premises data centers, private clouds and/or public clouds.

Syncing Active Directory

Synchronizing your on-premises Active Directory with Azure Active Directory is a core feature of a hybrid Exchange environment. To verify whether your Microsoft 365 tenant is synchronized:

1. Sign in to the Microsoft 365 admin center.
2. In the left navigation pane, expand Health.
3. Check if Directory Sync Status appears. Its presence indicates that synchronization has been configured.
4. To view the synchronization details, verify the values for Directory sync enabled and Last directory sync.

In case the Directory Sync Status page is not visible in the navigation pane and the Directory sync enabled status is False, it is clear that the Active Directory synchronization is not properly configured.

Note
If you create users or groups in your Office 365 account, they will not be reflected in your local Active Directory. So, you need to create or modify such items locally and synchronize the updates later.

Exchange Hybrid Environment

To verify whether your Exchange is configured for a hybrid setup:

1. Open the Exchange admin center (EAC).
2. In the left pane, navigate to Hybrid.
3. On the setup page, check the Enable or Configure button.

If the Enable or Configure option is active, it indicates that your Exchange environment is not currently configured for hybrid deployment.

If you see a modify or change button instead, it means your Exchange server has been integrated with your Office 365 tenant. To test the hybrid configuration, use the Exchange Management Shell and run the following cmdlet:

Get-HybridConfiguration | fl