Hi @Barad_Vishal
Assignment Rule is an Out-of-the-Box (OOTB) feature and does not require any additional license, so it's usually the first option to consider. However, if you have a Performance Intelligence (PI) license, you can build a more advanced solution under PI and use that instead.
It totally depends on the business need — both approaches are valid and can be used accordingly.
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Regards
Dr. Atul G. - Learn N Grow Together
ServiceNow Techno - Functional Trainer
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