Rule engine

A system that applies predefined rules to data to evaluate conditions, guide decision logic through a series of choices, and determine the correct action or response.

Example

An e-commerce platform might use a rule engine to determine the correct tax rate for each order. It evaluates the customer’s location, product category, and other relevant factors against a set of tax rules. The rule engine then calculates the applicable taxes, helping maintain compliance with regulations and keeping the checkout process clear for the customer.