What is the difference between Drools, Kogito, and KIE?

They are layers of the same ecosystem rather than competing products:

KIE is the umbrella platform and the shared APIs, tooling, and runtime that everything else is built on.
Drools is the rules engine within KIE — it evaluates business rules and decisions.
Kogito is the cloud-native runtime that packages Drools rules and jBPM processes into compiled, container-ready services.

In short: KIE is the foundation, Drools is the rules brain, and Kogito is the modern, cloud-native way to run it all.

Where to go next

The umbrella platform that everything else is built on.

The rules engine that evaluates business rules and decisions.

The cloud-native runtime that packages rules and processes.

Component details for the Drools rules engine.

Component details for the Kogito cloud-native runtime.

How these layers fit together in the Aletyx stack.