Describe XCOPY deployment. Under what conditions is it useful? When can it not be used?

Answer:

XCOPY deployment is a simple method of deployment where the DOS command XCOPY is used to copy the application directory and any sub directories to the target machine. You can use XCOPY deployment if your application has no dependency on shared files and requires no special actions to be taken upon deployment. If suppose one application requires more complex deployment or references shared assemblies, there you should not use XCOPY.