SAP Banking is a software solution developed by SAP targeting Banking Industry.
It is suffice to say that it is similar to any other module released by SAP. Hope you can relate to with whichever module your expertise lies in.
To have complete (SAP)Banking solutions might use CRM, Banking Services, Bank Analyzer & FI-CAx
Again some might use non SAP system for any of the above function and use SAP for the rest, it entirely business decision arrived at looking at company's need and solution offering from respective software manufacturer.
