Hi K_Sai_K
I believe this KB does a good job of explaining the Shazzam Probe:
Discovery Phase Shazzam - Support and Troubleshooting
Shazzam is the ServiceNow name for it, but to my knowledge, technically what happens on the MID server is that it is utilizing tools like Nmap (which is packaged together with the MID server files).
High level explanation:
It maps the network and discovers which IP's are responding and what ports are available(open) for each IP. This then determines what Discovery process will do next for each respective IP (try to classify it).
