Understanding business rules
Business rules help us to implement business logic without any coding requirement. System administrators or business users can use the out-of-the-box business rule designer to design business specific validations in a declarative manner.
Business rules were initially released in Microsoft Dynamics CRM 2013, but we got new enhancements in Microsoft Dynamics CRM 2015. Business rules can be used for simply setting default value or doing complex calculations using formulas. While creating a business rule, we can define its scope. We have the flexibility of applying business rules to specific entity forms or all entity forms (if we are using multiple entity forms).
Business rules are portable so we can take them from one ...