RuleEngineLogoOpenRules Decision Manager helps enterprises develop operational decision services for their decision-making business applications. The top-level architecture is shown on the above picture where a stateful decision-making application invokes stateless operational decision services.


Decision services are based on business decision models usually created, tested, and maintained by business analysts in the Rules Repository using only familiar tools such as Excel (or Google Sheets) and OpenRules Decision Modeling IDE.

Tested decision models can be deployed on-premise or on cloud using the standard frameworks provided by major vendors:


OpenRules Decision Manager supports Serverless Architecture for Decision Microservices. With a push of a button it can deploy decision models as microservices using different deployment options described here.

To support Service Orchestration of decision services it supports special decision tables for assembling new decision services using the existing decision services with orchestrating logic described in business rules.ServiceOrchestrationSchemaTo support Choreography of decision services with event streams you may use OpenRules  State Machines:StateMachine

OpenRules Decision Manager supports the development of domain-specific libraries of decision services as described on the following diagram:

You may download, analyze, and execute Loan Origination Services created on the top of such a library.

P.S. When OpenRules is used from AWS Marketplace, it uses the AWS Tracker which architecture is described here.