@Siya Kumari, Thanks for posting in Q&A. In General, Microsoft Intune is a cloud service which manages user access to organizational resources and simplifies app and device management across your many devices.
For Hybrid Azure AD join, if you have an on-premises Active Directory Domain Services (AD DS) environment and you want to join your AD DS domain-joined computers to Microsoft Entra ID, you can accomplish this task by doing Microsoft Entra hybrid join (Hybrid Azure AD join).
https://learn.microsoft.com/en-us/entra/identity/devices/hybrid-join-plan
To manage the device by Intune, we need to firstly enroll the devices into Intune.
https://learn.microsoft.com/en-us/mem/intune/fundamentals/deployment-guide-enrollment-windows
For Hybrid Azure AD joined device, we can choose either one of the following methods:
- GPO enrollment
- Autopilot Hybrid Azure AD join
- Co-management
To do GPO enrollment, we can configure autoenrollment, configure GPO in domain group policy. Here is a link with more details for your reference:
https://learn.microsoft.com/en-us/windows/client-management/enroll-a-windows-10-device-automatically-using-group-policy
Hope the above information can help.
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