Drools

Drools is a business rule management system that helps organizations automate decision-making processes. Think of it as a digital rulebook that allows you to specify conditions and actions—for example, "If a customer’s purchase exceeds $1,000, then offer a discount." Instead of hard-coded logic, Drools allows rules to be managed separately, making updates easier without changing the core software. It uses a language called DRL to define these rules and processes. This system ensures consistency, speeds up decisions, and simplifies complex workflows across different business applications.