new page for steps to migrate nested confidential VMs

new page for steps to migrate nested confidential VMs - this will help customers specifically in japan east and provides documentation for all migration ourposes

Author: angarg05

articles/confidential-computing/TOC.yml

@@ -65,6 +65,8 @@
       href: how-to-leverage-virtual-tpms-in-azure-confidential-vms.md
     - name: Create a custom image for a confidential VM
       href: how-to-create-custom-image-confidential-vm.md
+    - name: How to migrate nested confidential VMs from one region to another
+      href: migrate-nested-confidential-vms.md
     - name: Quickly create confidential VMs
       items:
       - name: Create VM through the Azure portal

articles/confidential-computing/media/migrate-nested-cvms/image 1.png

@@ -0,0 +1,53 @@
+---
+
+title: How to migrate a Nested Confidential VM from one region to another
+
+description: Migraten nested confidential VMs from one region to another
+
+services: virtual-machines
+
+author: ananyagarg
+
+ms.service: azure-virtual-machines
+
+ms.subservice: azure-confidential-computing
+
+ms.topic: concept-article
+
+ms.date: 07/07/2025
+
+ms.author: ananyagarg
+---
+
+**Step1**: Identify the target region
+
+**Step 2**: Prepare the Source Nested Confidential VM by ensuring all data is backed up
+
+**Step 3**:  Verify that your subscription has sufficient quota for the target VM in the target region. Request a quota through the [Azure portal](https://learn.microsoft.com/en-us/azure/azure-portal/supportability/per-vm-quota-requests) if needed.
+
+**Step 4**: Navigate to VM you wish to resize in the portal
+
+**Step 5**: Click the stop button and wait for status of the VM to be Stopped (deallocated)
+:::image type="complex" source=".\media\migrate-nested-cvms\image 1.png":::
+
+**Step 6**: Find the **Capture** drop down in the overview tab of the VM, then select **Image**
+
+**When you get to the image creation page**:
+* Ensure you select *Automatically delete this Virtual Machine after creating the image* (check image 2)
+:::image type="complex" source=".\media\migrate-nested-cvms\image 2.png":::
+
+* If you do not have a gallery, in the gallery option, select *Create new* and name your gallery
+
+* Fill in name and other options, create an image definition if none are usable
+
+* Read the descriptions for specialized vs generalized images and choose your option.  (If not sure, generalized should work for most cases.)
+
+* Continue to fill other options.  In the replication portion of the image capture option, add the region you wish to *relocate* your VM to.  You will need to select the target region drop down
+:::image type="complex" source=".\media\migrate-nested-cvms\image 3.png":::
+
+**Fill in all other options and hit *Review + create***
+
+**Step 7**: Go to your gallery and select the image you captured.  In the top left, select **Create a vm**
+
+**Step 8**: Fill in all options and ensure you select the new region and new size.  If you do not see the size you wish to have, ensure no infrastructure redundancy is required is selected and that your requested region supports the size you wish to have.
+