In reply to Prem Chandran.

With ZTP you need to do all the work yourself. You need to run a web server, create a python script, match a serial number etc. There is no UI, you would need to build this

PnP has a complete workflow with a UI already done. You can upload config files, create rules all through the UI (or the REST API).

PnP also has built in certificate management for the device and a SUDI check option to make sure the device has a valid manufacturing certificate.