Need instruction and guide to migrate Azure resources from one Tenant to another Tenant

Question

Hi,

I need advise on how to migration all subscriptions/resources/services residing in Tenant A to Tenant B.

Can anyone help to provide advise?

Rgds,

Answer 1

Consider the subscription transfer approach described in https://learn.microsoft.com/en-us/answers/questions/1163849/best-way-to-do-a-phased-tenant-to-tenant-migration

This is the simplest way to accomplish your objective.

In particular, a subscription transfer allows you to move an entire Azure subscription from Tenant A to Tenant B while keeping all associated resources intact. This is the simplest approach if you only need to transfer a single subscription and its resources without restructuring workloads.

When a subscription is transferred:

• All resources under that subscription move to the new tenant.
• Billing and ownership shift to the new tenant.
• User access in the original tenant is revoked, meaning administrators from Tenant A will no longer manage it.
• Resource locks, policies, and RBAC assignments are removed, requiring reconfiguration in Tenant B.

Before proceeding with a subscription transfer, consider the following:

• The subscription must be in the same billing account as the destination tenant.
• The subscription must not be suspended or deleted.
• All resources should be in a supported region for the destination tenant.
• Some services and configurations do not transfer, requiring manual reconfiguration in the new tenant.

You can initiate a subscription transfer via:

• Azure Portal – Using the Billing Management section.
• Azure PowerShell – With the New-AzSubscriptionTransfer command.
• Azure CLI – Using az account subscription transfer.

The process involves:

1. Requesting the transfer from the source tenant.
2. Accepting the transfer in the target tenant.
3. Reapplying policies, role assignments, and access controls in the new tenant.

This method is recommended if you want a quick and direct way to move an entire subscription while avoiding a more complex tenant-to-tenant migration.

If you need to move multiple subscriptions, specific resources, or services that are not covered by a subscription transfer, a tenant-to-tenant migration is required. This approach provides more flexibility but requires careful planning and additional migration tools, including

• Assessing resources & dependencies to determine what needs to be moved.
• Backing up critical data before starting the migration.
• Reviewing networking and identity configurations to avoid disruptions.

Depending on the resource types, different tools can be used:

• Azure Resource Mover – Best for infrastructure resources like VMs, storage, and networking.
• Azure Migrate – Ideal for large-scale workloads, databases, and applications.
• Azure Site Recovery – Useful for disaster recovery-based migrations with minimal downtime.

After the migration, it is crucial to:

• Verify that all resources are accessible and operational.
• Reconfigure security settings and access policies.
• Update DNS settings and application dependencies as needed.

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