Business rules is a new feature added to Dynamics CRM with version 2013. It allows power users and nondevelopers to create automated processes without the use of custom code. It is a very powerful feature that's been added to the system customizer's toolbox.
With the use of business rules, now we can apply form logic to replace some of the JavaScript code we previously used for customization. For situations where we want to validate fields, show or hide fields based on values of another fields, or simple form manipulations, we can now implement Business Rules. These rules can be applied in a pseudo-code format. No code is required, as the whole creation of business rules wizard based.
While this is a step in the right direction, business rules will not replace JScript completely. For complex validations and implementation of complicated rules, you will find that certain limitations will still require a JScript developer to be involved.
The main difference between workflows and...