Current Scenario: Single forest multiple Sub domain (child domains) and tree. Microsoft 365 in place.
Requirement: customer wants to migrate his tree domain separate from the forest, customer wants to migrate users and computers to azure since they have already having azure tenant which is used for Microsoft 365, Servers and other applications to on premises ADDS forest. customer is having SCCM in places features used are patch management, application deployment and OS image deployment etc.
Question: how to migrate users and computers to Azure tenant (to existing Microsoft 365 tenant) and maintaining the application/Server access since both application/server also migrating to new on premises ADDS forest (maintaining the SID history)