Migrating assets from one cloud instance to other

@mani_kumar_ : Please reach out to AMS team. They uses a tool called Glutton to load data into customer environments. Glutton is a small Java application that loads all assets from one directory into another directory on an Experience Manager instance. It will save lots of time in migrating the assets. If you want to handle on your own. Please try the below steps:-

When migrating assets between Experience Manager instances, you perform the following steps:

1. Disable the workflow launchers for DAM Update Asset.

2. Migrate tags

3. Migrate assets: There are two tools that are recommended for moving assets from one Experience Manager instance to another:

   • Vault Remote Copy, or vlt rcp, allows you to use vlt across a network. You can specify a source and destination directory and vlt downloads all repository data from one instance and loads it into the other. Vlt rcp is documented at https://jackrabbit.apache.org/filevault/rcp.html
   • Grabbit is an open-source content synchronization tool that was developed by Time Warner Cable for their Experience Manager implementation. Because it uses continuous data streams, in comparison to vlt rcp, it has a lower latency and claims a speed improvement of two to ten times faster than vlt rcp. Grabbit also supports synchronization of delta content only, which allows it to sync changes after an initial migration pass has been completed.

4. Activate assets:

5. Clone publish: As with a new migration, loading a single publish instance and cloning it is more efficient than activating the content on both nodes. See Cloning Publish.

6. Enabling back the DAM update asset workflow.

@mani_kumar_ 
Have been following the conversation below. 

For such requirement CTT is the recommended way to go. Please follow the below link which clearly mentions that Content Transfer tool can be used to move existing content from AEM instance (On Prem or AMS) to AEMaaCS

https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/migration-journey/cloud-migration/content-transfer-tool/overview-content-transfer-tool.html?lang=en#:~:text=The%20Content%20Transfer%20Tool%20is%20a%20tool%20developed%20by%20Adobe%20that%20can%20be%20used%20to%20move%20existing%20content%20over%20from%20a%20source%20AEM%20instance%20(on%2Dpremise%20or%20AMS)%20to%20the%20target%20AEM%20Cloud%20Service%20instance.