I am Looking for any document related to CA DEVTEST wich can used to implement for the Cloud Applications?
Hi Santhosh, you might read over this architecture good practice material.
DevTest Architecture Best Practice - Overview and the supporting Use Cases (links).
In terms of setting up DevTest on-prem or in the cloud, the majority of the setup is related to ensuring firewalls are open. The DT components themselves can be distributed horizontally or vertically.
Is there a specific setup you are looking to achieve?