The Categorization Question
ServiceNow is purpose-built for ITSM. Salesforce Service Cloud is purpose-built for customer service. Using Salesforce for ITSM is possible but swimming upstream.
Out-of-Box Fit
ServiceNow: incident, problem, change, CMDB, service catalog ready out of box. Salesforce: you build most of it.
When Salesforce Can Work
IT team is small, ITSM needs basic, you’re already deep in Salesforce. Consolidation outweighs best-of-breed.
When ServiceNow Wins
Enterprise IT, ITOM needs, ITIL-aligned processes, multi-module usage (HR, CSM, Security Ops).
Cost Consideration
Salesforce requires custom work for ITSM — partner/labor cost. ServiceNow is higher list but less custom build.