How will I estimate the time taken for migrating Azure subscription from one Azure Tenant to another Tenant

Question

We are planning to migrate our Azure subscription from one Azure Tenant to another Tenant. We were referring to the below documentation:

• https://learn.microsoft.com/en-us/azure/active-directory/fundamentals/active-directory-how-subscriptions-associated-directory
• https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/billing-subscription-transfer

We would to understand how we can estimate the approximate time taken for this migration.

Answer 1

Hi,

Welcome to Microsoft Q&A community forum!

When you transfer a subscription to a different Azure AD directory, some resources are not transferred to the target directory. For example, all role assignments and custom roles in Azure role-based access control (Azure RBAC) are permanently deleted from the source directory and are not transferred to the target directory.

Transferring a subscription requires downtime to complete the process. Depending on your scenario, you can consider the following alternate approaches:

• Re-create the resources and copy data to the target directory and subscription.
• Adopt a multi-directory architecture and leave the subscription in the source directory. Use Azure Lighthouse to delegate resources so that users in the target directory can access the subscription in the source directory. For more information, see Azure Lighthouse in enterprise scenarios.

It's difficult to estimate the time it takes, it also depends on how many services you have

ref link:

https://learn.microsoft.com/en-us/azure/role-based-access-control/transfer-subscription

Hope this helps

Cheers

Luca

Please "Accept as Answer" and Upvote if the answer provided is useful, so that you can help others in the community looking for remediation for similar issues