Mastering JBoss Drools 6 was written to provide a comprehensive guide that helps you understand the main principles used by the Drools project to build smarter applications, using the power of business rules. This book covers important topics such as the drools rule syntax, Drools runtime configurations, internal mechanisms of the rule engine, and different ways of writing rules using domain-specific languages, integration patterns, and tooling descriptions. All these topics are covered with a technical perspective that will help developers adopt these technologies. The book is also targeted at topics that are not always covered by business rule systems, such as business processes, complex event processing, and tooling extension capabilities that are introduced to demonstrate the power of mixing different business knowledge descriptions into one smarter, adaptive platform.