Hi @GurudasSatardekar
Welcome to Microsoft Q&A! Thanks for posting the question.
For Microsoft 365 tenant-to-tenant migrations, there are several architecture approaches that can be taken depending on the scenario. Please refer to this link for various scenarios and corresponding steps that are recommended to be taken. Use the Tenant-to-tenant migration architecture model to understand how to plan for Microsoft 365 tenant-to-tenant migrations and the steps of a migration.
Please let me know if you have any questions.
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