JBoss Rules
JBoss Rules is a business rules management system (BRMS) and a rule engine that allows developers to define, manage, and execute business rules in Java applications. It enables the separation of business logic from application code, making rules easier to modify and maintain without redeploying the application. Originally part of the JBoss Enterprise Middleware suite, it is now known as Drools, which is the open-source project that powers it.
Developers should learn JBoss Rules when building applications that require dynamic, frequently changing business logic, such as fraud detection systems, pricing engines, or compliance monitoring tools. It is particularly useful in enterprise environments where business analysts need to define or update rules without deep programming knowledge, as it supports a declarative rule language (DRL) and graphical rule editors.