@Reza Rahman, Thanks for posting in Q&A. From the information you provided, I know you want to migrate from jumpcloud to Intune. For the devices, they need to be unenrolled from jumpcloud before enroll into Intune. Here is a link list the steps to do the migration. You can read it as a reference:
To enroll windows devices into Intune, there are many methods. Different method for different scenario. You can read the following link to choose one enrollment method to do the enrollment:
Hope the above information can help.
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