add migration tags

Author: jmart1428

articles/data-factory/data-migration-guidance-s3-azure-storage.md

@@ -6,9 +6,10 @@ author: dearandyxu
 ms.subservice: data-movement
 ms.topic: conceptual
 ms.date: 05/15/2024
-ms.custom:
-  - migration
-  - aws-to-azure
+ms.collection: 
+ - migration
+ - aws-to-azure
+ - gcp-to-azure
 ---
 
 # Use Azure Data Factory to migrate data from Amazon S3 to Azure Storage 

articles/data-factory/solution-template-migration-s3-azure.md

@@ -6,9 +6,10 @@ ms.author: yexu
 ms.topic: conceptual
 ms.date: 10/03/2024
 ms.subservice: data-movement
-ms.custom:
-  - migration
-  - aws-to-azure
+ms.collection: 
+ - migration
+ - aws-to-azure
+ - gcp-to-azure
 ---
 
 # Migrate data from Amazon S3 to Azure Data Lake Storage Gen2

articles/migrate/tutorial-migrate-aws-virtual-machines.md

@@ -9,8 +9,10 @@ ms.date: 12/31/2024
 ms.custom:
   - MVC
   - engagement-fy25
-  - migration
-  - aws-to-azure
+ms.collection: 
+ - migration
+ - aws-to-azure
+ - gcp-to-azure
 ---
 
 # Discover, assess, and migrate Amazon Web Services (AWS) VMs to Azure

articles/migrate/tutorial-migrate-gcp-virtual-machines.md

@@ -7,6 +7,10 @@ ms.topic: tutorial
 ms.date: 12/30/2024
 ms.service: azure-migrate
 ms.custom: MVC, engagement-fy24
+ms.collection: 
+ - migration
+ - aws-to-azure
+ - gcp-to-azure
 ---
 
 # Discover, assess, and migrate Google Cloud Platform (GCP) VMs to Azure

articles/migrate/vmware/migrate-support-matrix-vmware.md

@@ -10,8 +10,10 @@ ms.date: 02/07/2025
 ms.custom:
   - vmware-scenario-422
   - engagement-fy24
-  - migration
-  - aws-to-azure
+ms.collection: 
+ - migration
+ - aws-to-azure
+ - gcp-to-azure
 ---
 
 # Support matrix for VMware discovery